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source: git/Singular/extra.cc @ 6b4ff12

spielwiese

Last change on this file since 6b4ff12 was 6b4ff12, checked in by Hans Schönemann <hannes@…>, 15 years ago
*hannes: gcc 4.3 git-svn-id: file:///usr/local/Singular/svn/trunk@11874 2c84dea3-7e68-4137-9b89-c4e89433aadc
Property mode set to `100644`
File size: 82.8 KB

Line
1	/*****************************************
2	* Computer Algebra System SINGULAR *
3	*****************************************/
4	/* $Id: extra.cc,v 1.302 2009-06-04 09:58:49 Singular Exp $ */
5	/*
6	* ABSTRACT: general interface to internals of Singular ("system" command)
7	*/
8
9	#define HAVE_WALK 1
10
11	#include <stdlib.h>
12	#include <stdio.h>
13	#include <string.h>
14	#include <ctype.h>
15	#include <signal.h>
16	#include "mod2.h"
17
18	#ifdef TIME_WITH_SYS_TIME
19	# include <time.h>
20	# ifdef HAVE_SYS_TIME_H
21	# include <sys/time.h>
22	# endif
23	#else
24	# ifdef HAVE_SYS_TIME_H
25	# include <sys/time.h>
26	# else
27	# include <time.h>
28	# endif
29	#endif
30	#ifdef HAVE_SYS_TIMES_H
31	#include <sys/times.h>
32	#endif
33
34	#include <unistd.h>
35
36	#include "tok.h"
37	#include "ipid.h"
38	#include "polys.h"
39	#include "lists.h"
40	#include "kutil.h"
41	#include "cntrlc.h"
42	#include "stairc.h"
43	#include "ipshell.h"
44	#include "modulop.h"
45	#include "febase.h"
46	#include "matpol.h"
47	#include "longalg.h"
48	#include "ideals.h"
49	#include "kstd1.h"
50	#include "syz.h"
51	#include "sdb.h"
52	#include "feOpt.h"
53	#include "distrib.h"
54	#include "prCopy.h"
55	#include "mpr_complex.h"
56	#include "ffields.h" // test GF only
57
58	#ifdef HAVE_RINGS
59	#include "ringgb.h"
60	#endif
61
62	#ifdef HAVE_GFAN
63	#include "gfan.h"
64	#endif
65
66	#ifdef HAVE_F5
67	#include "f5gb.h"
68	#endif
69
70	#ifdef HAVE_WALK
71	#include "walk.h"
72	#endif
73
74	#include "weight.h"
75	#include "fast_mult.h"
76	#include "digitech.h"
77
78	#ifdef HAVE_SPECTRUM
79	#include "spectrum.h"
80	#endif
81
82	#ifdef HAVE_BIFAC
83	#include <bifac.h>
84	#endif
85
86	#if defined(HPUX_10) \|\| defined(HPUX_9)
87	extern "C" int setenv(const char name, const char value, int overwrite);
88	#endif
89
90	#ifdef HAVE_PLURAL
91	#include "ring.h"
92	#include "gring.h"
93	#include "sca.h"
94	#include <ncSAMult.h> // for CMultiplier etc classes
95	#include "ipconv.h"
96	#include "ratgring.h"
97	#endif
98
99	#ifdef ix86_Win /* only for the DLLTest */
100	/* #include "WinDllTest.h" */
101	#ifdef HAVE_DL
102	#include "mod_raw.h"
103	#endif
104	#endif
105
106	// for tests of t-rep-GB
107	#include "tgb.h"
108
109	// Define to enable many more system commands
110	#undef MAKE_DISTRIBUTION
111	#ifndef MAKE_DISTRIBUTION
112	#define HAVE_EXTENDED_SYSTEM 1
113	#endif
114
115	#ifdef HAVE_FACTORY
116	#define SI_DONT_HAVE_GLOBAL_VARS
117	#include "clapsing.h"
118	#include "clapconv.h"
119	#include "kstdfac.h"
120	#endif
121
122	#include "silink.h"
123	#include "walk.h"
124
125	#include "fast_maps.h"
126
127	#include "shiftgb.h"
128
129	#ifdef HAVE_EIGENVAL
130	#include "eigenval_ip.h"
131	#endif
132
133	#ifdef HAVE_GMS
134	#include "gms.h"
135	#endif
136
137	/*
138	* New function/system-calls that will be included as dynamic module
139	* should be inserted here.
140	* - without HAVE_DYNAMIC_LOADING: these functions comes as system("....");
141	* - with HAVE_DYNAMIC_LOADING: these functions are loaded as module.
142	*/
143	//#ifndef HAVE_DYNAMIC_LOADING
144
145	#ifdef HAVE_PCV
146	#include "pcv.h"
147	#endif
148
149	//#endif /* not HAVE_DYNAMIC_LOADING */
150
151	#ifdef ix86_Win
152	//#include <Python.h>
153	//#include <python_wrapper.h>
154	#endif
155
156
157	// see clapsing.cc for a description of the `FACTORY_*' options
158
159	#ifdef FACTORY_GCD_STAT
160	#include "gcd_stat.h"
161	#endif
162
163	#ifdef FACTORY_GCD_TIMING
164	#define TIMING
165	#include "timing.h"
166	TIMING_DEFINE_PRINTPROTO( contentTimer );
167	TIMING_DEFINE_PRINTPROTO( algContentTimer );
168	TIMING_DEFINE_PRINTPROTO( algLcmTimer );
169	#endif
170
171	void piShowProcList();
172	#ifndef MAKE_DISTRIBUTION
173	static BOOLEAN jjEXTENDED_SYSTEM(leftv res, leftv h);
174	#endif
175
176	extern BOOLEAN jjJanetBasis(leftv res, leftv v);
177
178	#ifdef ix86_Win /* PySingular initialized? */
179	static int PyInitialized = 0;
180	#endif
181
182	int singular_homog_flag=1;
183
184	//void emStart();
185	/*2
186	* the "system" command
187	*/
188	BOOLEAN jjSYSTEM(leftv res, leftv args)
189	{
190	if(args->Typ() == STRING_CMD)
191	{
192	const char sys_cmd=(char )(args->Data());
193	leftv h=args->next;
194	// ONLY documented system calls go here
195	// Undocumented system calls go down into #ifdef HAVE_EXTENDED_SYSTEM
196	/==================== nblocks ==================================/
197	if (strcmp(sys_cmd, "nblocks") == 0)
198	{
199	ring r;
200	if (h == NULL)
201	{
202	if (currRingHdl != NULL)
203	{
204	r = IDRING(currRingHdl);
205	}
206	else
207	{
208	WerrorS("no ring active");
209	return TRUE;
210	}
211	}
212	else
213	{
214	if (h->Typ() != RING_CMD)
215	{
216	WerrorS("ring expected");
217	return TRUE;
218	}
219	r = (ring) h->Data();
220	}
221	res->rtyp = INT_CMD;
222	res->data = (void*) (long)(rBlocks(r) - 1);
223	return FALSE;
224	}
225	/==================== version ==================================/
226	if(strcmp(sys_cmd,"version")==0)
227	{
228	res->rtyp=INT_CMD;
229	res->data=(void *)SINGULAR_VERSION;
230	return FALSE;
231	}
232	else
233
234
235
236
237	/==================== gen ==================================/
238	if(strcmp(sys_cmd,"gen")==0)
239	{
240	res->rtyp=INT_CMD;
241	res->data=(void *)(long)npGen;
242	return FALSE;
243	}
244	else
245	/==================== sh ==================================/
246	if(strcmp(sys_cmd,"sh")==0)
247	{
248	res->rtyp=INT_CMD;
249	if (h==NULL) res->data = (void *)(long) system("sh");
250	else if (h->Typ()==STRING_CMD)
251	res->data = (void)(long) system((char)(h->Data()));
252	else
253	WerrorS("string expected");
254	return FALSE;
255	}
256	else
257	/==================== uname ==================================/
258	if(strcmp(sys_cmd,"uname")==0)
259	{
260	res->rtyp=STRING_CMD;
261	res->data = omStrDup(S_UNAME);
262	return FALSE;
263	}
264	else
265	/==================== with ==================================/
266	if(strcmp(sys_cmd,"with")==0)
267	{
268	if (h==NULL)
269	{
270	res->rtyp=STRING_CMD;
271	res->data=(void *)omStrDup(versionString());
272	return FALSE;
273	}
274	else if (h->Typ()==STRING_CMD)
275	{
276	#define TEST_FOR(A) if(strcmp(s,A)==0) res->data=(void *)1; else
277	char s=(char )h->Data();
278	res->rtyp=INT_CMD;
279	#ifdef HAVE_DBM
280	TEST_FOR("DBM")
281	#endif
282	#ifdef HAVE_DLD
283	TEST_FOR("DLD")
284	#endif
285	#ifdef HAVE_FACTORY
286	TEST_FOR("factory")
287	#endif
288	#ifdef HAVE_LIBFAC_P
289	TEST_FOR("libfac")
290	#endif
291	#ifdef HAVE_MPSR
292	TEST_FOR("MP")
293	#endif
294	#ifdef HAVE_READLINE
295	TEST_FOR("readline")
296	#endif
297	#ifdef HAVE_TCL
298	TEST_FOR("tcl")
299	#endif
300	#ifdef TEST_MAC_ORDER
301	TEST_FOR("MAC_ORDER");
302	#endif
303	#ifdef HAVE_NS
304	TEST_FOR("Namespaces");
305	#endif
306	#ifdef HAVE_DYNAMIC_LOADING
307	TEST_FOR("DynamicLoading");
308	#endif
309	#ifdef HAVE_EIGENVAL
310	TEST_FOR("eigenval");
311	#endif
312	#ifdef HAVE_GMS
313	TEST_FOR("gms");
314	#endif
315	;
316	return FALSE;
317	#undef TEST_FOR
318	}
319	return TRUE;
320	}
321	else
322	/==================== browsers ==================================/
323	if (strcmp(sys_cmd,"browsers")==0)
324	{
325	res->rtyp = STRING_CMD;
326	char* b = StringSetS("");
327	feStringAppendBrowsers(0);
328	res->data = omStrDup(b);
329	return FALSE;
330	}
331	else
332	/==================== pid ==================================/
333	if (strcmp(sys_cmd,"pid")==0)
334	{
335	res->rtyp=INT_CMD;
336	res->data=(void *)(long) getpid();
337	return FALSE;
338	}
339	else
340	/==================== getenv ==================================/
341	if (strcmp(sys_cmd,"getenv")==0)
342	{
343	if ((h!=NULL) && (h->Typ()==STRING_CMD))
344	{
345	res->rtyp=STRING_CMD;
346	const char r=getenv((char )h->Data());
347	if (r==NULL) r="";
348	res->data=(void *)omStrDup(r);
349	return FALSE;
350	}
351	else
352	{
353	WerrorS("string expected");
354	return TRUE;
355	}
356	}
357	else
358	/==================== setenv ==================================/
359	if (strcmp(sys_cmd,"setenv")==0)
360	{
361	#ifdef HAVE_SETENV
362	if (h!=NULL && h->Typ()==STRING_CMD && h->Data() != NULL &&
363	h->next != NULL && h->next->Typ() == STRING_CMD
364	&& h->next->Data() != NULL)
365	{
366	res->rtyp=STRING_CMD;
367	setenv((char )h->Data(), (char )h->next->Data(), 1);
368	res->data=(void )omStrDup((char )h->next->Data());
369	feReInitResources();
370	return FALSE;
371	}
372	else
373	{
374	WerrorS("two strings expected");
375	return TRUE;
376	}
377	#else
378	WerrorS("setenv not supported on this platform");
379	return TRUE;
380	#endif
381	}
382	else
383	/==================== Singular ==================================/
384	if (strcmp(sys_cmd, "Singular") == 0)
385	{
386	res->rtyp=STRING_CMD;
387	const char *r=feResource("Singular");
388	if (r == NULL) r="";
389	res->data = (void*) omStrDup( r );
390	return FALSE;
391	}
392	else
393	if (strcmp(sys_cmd, "SingularLib") == 0)
394	{
395	res->rtyp=STRING_CMD;
396	const char *r=feResource("SearchPath");
397	if (r == NULL) r="";
398	res->data = (void*) omStrDup( r );
399	return FALSE;
400	}
401	else
402	/==================== options ==================================/
403	if (strstr(sys_cmd, "--") == sys_cmd)
404	{
405	if (strcmp(sys_cmd, "--") == 0)
406	{
407	fePrintOptValues();
408	return FALSE;
409	}
410
411	feOptIndex opt = feGetOptIndex(&sys_cmd[2]);
412	if (opt == FE_OPT_UNDEF)
413	{
414	Werror("Unknown option %s", sys_cmd);
415	Werror("Use 'system(\"--\");' for listing of available options");
416	return TRUE;
417	}
418
419	// for Untyped Options (help version),
420	// setting it just triggers action
421	if (feOptSpec[opt].type == feOptUntyped)
422	{
423	feSetOptValue(opt,0);
424	return FALSE;
425	}
426
427	if (h == NULL)
428	{
429	if (feOptSpec[opt].type == feOptString)
430	{
431	res->rtyp = STRING_CMD;
432	const char r=(const char)feOptSpec[opt].value;
433	if (r == NULL) r="";
434	res->data = omStrDup(r);
435	}
436	else
437	{
438	res->rtyp = INT_CMD;
439	res->data = feOptSpec[opt].value;
440	}
441	return FALSE;
442	}
443
444	if (h->Typ() != STRING_CMD &&
445	h->Typ() != INT_CMD)
446	{
447	Werror("Need string or int argument to set option value");
448	return TRUE;
449	}
450	const char* errormsg;
451	if (h->Typ() == INT_CMD)
452	{
453	if (feOptSpec[opt].type == feOptString)
454	{
455	Werror("Need string argument to set value of option %s", sys_cmd);
456	return TRUE;
457	}
458	errormsg = feSetOptValue(opt, (int)((long) h->Data()));
459	if (errormsg != NULL)
460	Werror("Option '--%s=%d' %s", sys_cmd, (int) ((long)h->Data()), errormsg);
461	}
462	else
463	{
464	errormsg = feSetOptValue(opt, (char*) h->Data());
465	if (errormsg != NULL)
466	Werror("Option '--%s=%s' %s", sys_cmd, (char*) h->Data(), errormsg);
467	}
468	if (errormsg != NULL) return TRUE;
469	return FALSE;
470	}
471	else
472	/==================== HC ==================================/
473	if (strcmp(sys_cmd,"HC")==0)
474	{
475	res->rtyp=INT_CMD;
476	res->data=(void *)(long) HCord;
477	return FALSE;
478	}
479	else
480	/==================== random ==================================/
481	if(strcmp(sys_cmd,"random")==0)
482	{
483	if ((h!=NULL) &&(h->Typ()==INT_CMD))
484	{
485	siRandomStart=(int)((long)h->Data());
486	#ifdef buildin_rand
487	siSeed=siRandomStart;
488	#else
489	srand((unsigned int)siRandomStart);
490	#endif
491	#ifdef HAVE_FACTORY
492	factoryseed(siRandomStart);
493	#endif
494	return FALSE;
495	}
496	else if (h != NULL)
497	{
498	WerrorS("int expected");
499	return TRUE;
500	}
501	res->rtyp=INT_CMD;
502	res->data=(void*)(long) siRandomStart;
503	return FALSE;
504	}
505	/==================== complexNearZero ======================/
506	if(strcmp(sys_cmd,"complexNearZero")==0)
507	{
508	if (h->Typ()==NUMBER_CMD )
509	{
510	if ( h->next!=NULL && h->next->Typ()==INT_CMD )
511	{
512	if ( !rField_is_long_C() )
513	{
514	Werror( "unsupported ground field!");
515	return TRUE;
516	}
517	else
518	{
519	res->rtyp=INT_CMD;
520	res->data=(void)complexNearZero((gmp_complex)h->Data(),
521	(int)((long)(h->next->Data())));
522	return FALSE;
523	}
524	}
525	else
526	{
527	Werror( "expected <int> as third parameter!");
528	return TRUE;
529	}
530	}
531	else
532	{
533	Werror( "expected <number> as second parameter!");
534	return TRUE;
535	}
536	}
537	/==================== getPrecDigits ======================/
538	if(strcmp(sys_cmd,"getPrecDigits")==0)
539	{
540	if ( !rField_is_long_C() && !rField_is_long_R() )
541	{
542	Werror( "unsupported ground field!");
543	return TRUE;
544	}
545	res->rtyp=INT_CMD;
546	res->data=(void*)getGMPFloatDigits();
547	return FALSE;
548	}
549	/==================== neworder =============================/
550	// should go below
551	#ifdef HAVE_LIBFAC_P
552	if(strcmp(sys_cmd,"neworder")==0)
553	{
554	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
555	{
556	res->rtyp=STRING_CMD;
557	res->data=(void *)singclap_neworder((ideal)h->Data());
558	return FALSE;
559	}
560	else
561	WerrorS("ideal expected");
562	}
563	else
564	#endif
565	//#ifndef HAVE_DYNAMIC_LOADING
566	/==================== pcv ==================================/
567	#ifdef HAVE_PCV
568	if(strcmp(sys_cmd,"pcvLAddL")==0)
569	{
570	return pcvLAddL(res,h);
571	}
572	else
573	if(strcmp(sys_cmd,"pcvPMulL")==0)
574	{
575	return pcvPMulL(res,h);
576	}
577	else
578	if(strcmp(sys_cmd,"pcvMinDeg")==0)
579	{
580	return pcvMinDeg(res,h);
581	}
582	else
583	if(strcmp(sys_cmd,"pcvP2CV")==0)
584	{
585	return pcvP2CV(res,h);
586	}
587	else
588	if(strcmp(sys_cmd,"pcvCV2P")==0)
589	{
590	return pcvCV2P(res,h);
591	}
592	else
593	if(strcmp(sys_cmd,"pcvDim")==0)
594	{
595	return pcvDim(res,h);
596	}
597	else
598	if(strcmp(sys_cmd,"pcvBasis")==0)
599	{
600	return pcvBasis(res,h);
601	}
602	else
603	#endif
604	/==================== eigenvalues ==================================/
605	#ifdef HAVE_EIGENVAL
606	if(strcmp(sys_cmd,"hessenberg")==0)
607	{
608	return evHessenberg(res,h);
609	}
610	else
611	if(strcmp(sys_cmd,"eigenvals")==0)
612	{
613	return evEigenvals(res,h);
614	}
615	else
616	#endif
617	/==================== Gauss-Manin system ==================================/
618	#ifdef HAVE_GMS
619	if(strcmp(sys_cmd,"gmsnf")==0)
620	{
621	return gmsNF(res,h);
622	}
623	else
624	#endif
625	//#endif /* HAVE_DYNAMIC_LOADING */
626	/==================== contributors =============================/
627	if(strcmp(sys_cmd,"contributors") == 0)
628	{
629	res->rtyp=STRING_CMD;
630	res->data=(void *)omStrDup(
631	"Olaf Bachmann, Michael Brickenstein, Hubert Grassmann, Kai Krueger, Victor Levandovskyy, Wolfgang Neumann, Thomas Nuessler, Wilfred Pohl, Jens Schmidt, Mathias Schulze, Thomas Siebert, Ruediger Stobbe, Moritz Wenk, Tim Wichmann");
632	return FALSE;
633	}
634	else
635	/==================== spectrum =============================/
636	#ifdef HAVE_SPECTRUM
637	if(strcmp(sys_cmd,"spectrum") == 0)
638	{
639	if (h->Typ()!=POLY_CMD)
640	{
641	WerrorS("poly expected");
642	return TRUE;
643	}
644	if (h->next==NULL)
645	return spectrumProc(res,h);
646	if (h->next->Typ()!=INT_CMD)
647	{
648	WerrorS("poly,int expected");
649	return TRUE;
650	}
651	if(((long)h->next->Data())==1L)
652	return spectrumfProc(res,h);
653	return spectrumProc(res,h);
654	}
655	else
656	/==================== semic =============================/
657	if(strcmp(sys_cmd,"semic") == 0)
658	{
659	if ((h->next!=NULL)
660	&& (h->Typ()==LIST_CMD)
661	&& (h->next->Typ()==LIST_CMD))
662	{
663	if (h->next->next==NULL)
664	return semicProc(res,h,h->next);
665	else if (h->next->next->Typ()==INT_CMD)
666	return semicProc3(res,h,h->next,h->next->next);
667	}
668	return TRUE;
669	}
670	else
671	/==================== spadd =============================/
672	if(strcmp(sys_cmd,"spadd") == 0)
673	{
674	if ((h->next!=NULL)
675	&& (h->Typ()==LIST_CMD)
676	&& (h->next->Typ()==LIST_CMD))
677	{
678	if (h->next->next==NULL)
679	return spaddProc(res,h,h->next);
680	}
681	return TRUE;
682	}
683	else
684	/==================== spmul =============================/
685	if(strcmp(sys_cmd,"spmul") == 0)
686	{
687	if ((h->next!=NULL)
688	&& (h->Typ()==LIST_CMD)
689	&& (h->next->Typ()==INT_CMD))
690	{
691	if (h->next->next==NULL)
692	return spmulProc(res,h,h->next);
693	}
694	return TRUE;
695	}
696	else
697	#endif
698
699	#define HAVE_SHEAFCOH_TRICKS 1
700
701	#ifdef HAVE_SHEAFCOH_TRICKS
702	if(strcmp(sys_cmd,"tensorModuleMult")==0)
703	{
704	// WarnS("tensorModuleMult!");
705	if (h!=NULL && h->Typ()==INT_CMD && h->Data() != NULL &&
706	h->next != NULL && h->next->Typ() == MODUL_CMD
707	&& h->next->Data() != NULL)
708	{
709	int m = (int)( (long)h->Data() );
710	ideal M = (ideal)h->next->Data();
711
712	res->rtyp=MODUL_CMD;
713	res->data=(void *)id_TensorModuleMult(m, M, currRing);
714	return FALSE;
715	}
716
717	WerrorS("system(\"tensorModuleMult\", int, module) expected");
718	return TRUE;
719	} else
720	#endif
721
722
723	#ifdef HAVE_PLURAL
724	/==================== Approx_Step =================/
725	if (strcmp(sys_cmd, "astep") == 0)
726	{
727	ideal I;
728	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
729	{
730	I=(ideal)h->CopyD();
731	res->rtyp=IDEAL_CMD;
732	if (rIsPluralRing(currRing)) res->data=Approx_Step(I);
733	else res->data=I;
734	setFlag(res,FLAG_STD);
735	}
736	else return TRUE;
737	return FALSE;
738	}
739	/==================== PrintMat =================/
740	if (strcmp(sys_cmd, "PrintMat") == 0)
741	{
742	int a;
743	int b;
744	ring r;
745	int metric;
746	if ((h!=NULL) && (h->Typ()==INT_CMD))
747	{
748	a=(int)((long)(h->Data()));
749	h=h->next;
750	}
751	else if ((h!=NULL) && (h->Typ()==INT_CMD))
752	{
753	b=(int)((long)(h->Data()));
754	h=h->next;
755	}
756	else if ((h!=NULL) && (h->Typ()==RING_CMD))
757	{
758	r=(ring)h->Data();
759	h=h->next;
760	}
761	else
762	return TRUE;
763	if ((h!=NULL) && (h->Typ()==INT_CMD))
764	{
765	metric=(int)((long)(h->Data()));
766	}
767	res->rtyp=MATRIX_CMD;
768	if (rIsPluralRing(r)) res->data=nc_PrintMat(a,b,r,metric);
769	else res->data=NULL;
770	return FALSE;
771	}
772	/==================== twostd =================/
773	if (strcmp(sys_cmd, "twostd") == 0)
774	{
775	ideal I;
776	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
777	{
778	I=(ideal)h->CopyD();
779	res->rtyp=IDEAL_CMD;
780	if (rIsPluralRing(currRing)) res->data=twostd(I);
781	else res->data=I;
782	setFlag(res,FLAG_TWOSTD);
783	setFlag(res,FLAG_STD);
784	}
785	else return TRUE;
786	return FALSE;
787	}
788	/==================== lie bracket =================/
789	if (strcmp(sys_cmd, "bracket") == 0)
790	{
791	poly p;
792	poly q;
793	if ((h!=NULL) && (h->Typ()==POLY_CMD))
794	{
795	p=(poly)h->CopyD();
796	h=h->next;
797	}
798	else return TRUE;
799	if ((h!=NULL) && (h->Typ()==POLY_CMD))
800	{
801	q=(poly)h->Data();
802	}
803	else return TRUE;
804	res->rtyp=POLY_CMD;
805	if (rIsPluralRing(currRing)) res->data=nc_p_Bracket_qq(p,q);
806	else res->data=NULL;
807	return FALSE;
808	}
809	if(strcmp(sys_cmd,"NCUseExtensions")==0)
810	{
811
812	if ((h!=NULL) && (h->Typ()==INT_CMD))
813	res->data=(void *)setNCExtensions( (int)((long)(h->Data())) );
814	else
815	res->data=(void *)getNCExtensions();
816
817	res->rtyp=INT_CMD;
818	return FALSE;
819	}
820
821
822	if(strcmp(sys_cmd,"NCGetType")==0)
823	{
824	res->rtyp=INT_CMD;
825
826	if( rIsPluralRing(currRing) )
827	res->data=(void *)ncRingType(currRing);
828	else
829	res->data=(void *)(-1);
830
831	return FALSE;
832	}
833
834
835	if(strcmp(sys_cmd,"ForceSCA")==0)
836	{
837	if( !rIsPluralRing(currRing) )
838	return TRUE;
839
840	int b, e;
841
842	if ((h!=NULL) && (h->Typ()==INT_CMD))
843	{
844	b = (int)((long)(h->Data()));
845	h=h->next;
846	}
847	else return TRUE;
848
849	if ((h!=NULL) && (h->Typ()==INT_CMD))
850	{
851	e = (int)((long)(h->Data()));
852	}
853	else return TRUE;
854
855
856	if( !sca_Force(currRing, b, e) )
857	return TRUE;
858
859	return FALSE;
860	}
861
862	if(strcmp(sys_cmd,"ForceNewNCMultiplication")==0)
863	{
864	if( !rIsPluralRing(currRing) )
865	return TRUE;
866
867	if( !ncInitSpecialPairMultiplication(currRing) ) // No Plural!
868	return TRUE;
869
870	return FALSE;
871	}
872
873	if(strcmp(sys_cmd,"ForceNewOldNCMultiplication")==0)
874	{
875	if( !rIsPluralRing(currRing) )
876	return TRUE;
877
878	if( !ncInitSpecialPowersMultiplication(currRing) ) // Enable Formula for Plural (depends on swiches)!
879	return TRUE;
880
881	return FALSE;
882	}
883
884
885
886
887	/==================== PLURAL =================/
888	/==================== opp ==================================/
889	if (strcmp(sys_cmd, "opp")==0)
890	{
891	if ((h!=NULL) && (h->Typ()==RING_CMD))
892	{
893	ring r=(ring)h->Data();
894	res->data=rOpposite(r);
895	res->rtyp=RING_CMD;
896	return FALSE;
897	}
898	else
899	{
900	WerrorS("`system(\"opp\",<ring>)` expected");
901	return TRUE;
902	}
903	}
904	else
905	/==================== env ==================================/
906	if (strcmp(sys_cmd, "env")==0)
907	{
908	if ((h!=NULL) && (h->Typ()==RING_CMD))
909	{
910	ring r = (ring)h->Data();
911	res->data = rEnvelope(r);
912	res->rtyp = RING_CMD;
913	return FALSE;
914	}
915	else
916	{
917	WerrorS("`system(\"env\",<ring>)` expected");
918	return TRUE;
919	}
920	}
921	else
922	/==================== oppose ==================================/
923	if (strcmp(sys_cmd, "oppose")==0)
924	{
925	if ((h!=NULL) && (h->Typ()==RING_CMD)
926	&& (h->next!=-NULL))
927	{
928	ring Rop = (ring)h->Data();
929	h = h->next;
930	idhdl w;
931	if ((w=Rop->idroot->get(h->Name(),myynest))!=NULL)
932	{
933	poly p = (poly)IDDATA(w);
934	res->data = pOppose(Rop,p);
935	res->rtyp = POLY_CMD;
936	return FALSE;
937	}
938	}
939	else
940	{
941	WerrorS("`system(\"oppose\",<ring>,<poly>)` expected");
942	return TRUE;
943	}
944	}
945	else
946	/==================== freeGB, twosided GB in free algebra =================/
947	#ifdef HAVE_SHIFTBBA
948	if (strcmp(sys_cmd, "freegb") == 0)
949	{
950	ideal I;
951	int uptodeg, lVblock;
952	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
953	{
954	I=(ideal)h->CopyD();
955	h=h->next;
956	}
957	else return TRUE;
958	if ((h!=NULL) && (h->Typ()==INT_CMD))
959	{
960	uptodeg=(int)((long)(h->Data()));
961	h=h->next;
962	}
963	else return TRUE;
964	if ((h!=NULL) && (h->Typ()==INT_CMD))
965	{
966	lVblock=(int)((long)(h->Data()));
967	res->data = freegb(I,uptodeg,lVblock);
968	if (res->data == NULL)
969	{
970	/* that is there were input errors */
971	res->data = I;
972	}
973	res->rtyp = IDEAL_CMD;
974	}
975	else return TRUE;
976	return FALSE;
977	}
978	else
979	#endif /SHIFTBBA/
980	#endif /PLURAL/
981	#ifdef HAVE_WALK
982	/==================== walk stuff =================/
983	#ifdef OWNW
984	if (strcmp(sys_cmd, "walkNextWeight") == 0)
985	{
986	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
987	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
988	h->next->next == NULL \|\| h->next->next->Typ() != IDEAL_CMD)
989	{
990	Werror("system(\"walkNextWeight\", intvec, intvec, ideal) expected");
991	return TRUE;
992	}
993
994	if (((intvec*) h->Data())->length() != currRing->N \|\|
995	((intvec*) h->next->Data())->length() != currRing->N)
996	{
997	Werror("system(\"walkNextWeight\" ...) intvecs not of length %d\n",
998	currRing->N);
999	return TRUE;
1000	}
1001	res->data = (void) walkNextWeight(((intvec) h->Data()),
1002	((intvec*) h->next->Data()),
1003	(ideal) h->next->next->Data());
1004	if (res->data == (void) 0 \|\| res->data == (void) 1)
1005	{
1006	res->rtyp = INT_CMD;
1007	}
1008	else
1009	{
1010	res->rtyp = INTVEC_CMD;
1011	}
1012	return FALSE;
1013	}
1014	else if (strcmp(sys_cmd, "walkInitials") == 0)
1015	{
1016	if (h == NULL \|\| h->Typ() != IDEAL_CMD)
1017	{
1018	WerrorS("system(\"walkInitials\", ideal) expected");
1019	return TRUE;
1020	}
1021
1022	res->data = (void*) walkInitials((ideal) h->Data());
1023	res->rtyp = IDEAL_CMD;
1024	return FALSE;
1025	}
1026	else
1027	#endif
1028	#ifdef WAIV
1029	if (strcmp(sys_cmd, "walkAddIntVec") == 0)
1030	{
1031	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1032	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD)
1033	{
1034	WerrorS("system(\"walkAddIntVec\", intvec, intvec) expected");
1035	return TRUE;
1036	}
1037	intvec* arg1 = (intvec*) h->Data();
1038	intvec* arg2 = (intvec*) h->next->Data();
1039
1040
1041	res->data = (intvec*) walkAddIntVec(arg1, arg2);
1042	res->rtyp = INTVEC_CMD;
1043	return FALSE;
1044	}
1045	else
1046	#endif
1047	#ifdef MwaklNextWeight
1048	if (strcmp(sys_cmd, "MwalkNextWeight") == 0)
1049	{
1050	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1051	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1052	h->next->next == NULL \|\| h->next->next->Typ() != IDEAL_CMD)
1053	{
1054	Werror("system(\"MwalkNextWeight\", intvec, intvec, ideal) expected");
1055	return TRUE;
1056	}
1057
1058	if (((intvec*) h->Data())->length() != currRing->N \|\|
1059	((intvec*) h->next->Data())->length() != currRing->N)
1060	{
1061	Werror("system(\"MwalkNextWeight\" ...) intvecs not of length %d\n",
1062	currRing->N);
1063	return TRUE;
1064	}
1065	intvec* arg1 = (intvec*) h->Data();
1066	intvec* arg2 = (intvec*) h->next->Data();
1067	ideal arg3 = (ideal) h->next->next->Data();
1068
1069	intvec* result = (intvec*) MwalkNextWeight(arg1, arg2, arg3);
1070
1071	res->rtyp = INTVEC_CMD;
1072	res->data = result;
1073
1074	return FALSE;
1075	}
1076	else
1077	#endif //MWalkNextWeight
1078	if(strcmp(sys_cmd, "Mivdp") == 0)
1079	{
1080	if (h == NULL \|\| h->Typ() != INT_CMD)
1081	{
1082	Werror("system(\"Mivdp\", int) expected");
1083	return TRUE;
1084	}
1085	if ((int) ((long)(h->Data())) != currRing->N)
1086	{
1087	Werror("system(\"Mivdp\" ...) intvecs not of length %d\n",
1088	currRing->N);
1089	return TRUE;
1090	}
1091	int arg1 = (int) ((long)(h->Data()));
1092
1093	intvec* result = (intvec*) Mivdp(arg1);
1094
1095	res->rtyp = INTVEC_CMD;
1096	res->data = result;
1097
1098	return FALSE;
1099	}
1100
1101	else if(strcmp(sys_cmd, "Mivlp") == 0)
1102	{
1103	if (h == NULL \|\| h->Typ() != INT_CMD)
1104	{
1105	Werror("system(\"Mivlp\", int) expected");
1106	return TRUE;
1107	}
1108	if ((int) ((long)(h->Data())) != currRing->N)
1109	{
1110	Werror("system(\"Mivlp\" ...) intvecs not of length %d\n",
1111	currRing->N);
1112	return TRUE;
1113	}
1114	int arg1 = (int) ((long)(h->Data()));
1115
1116	intvec* result = (intvec*) Mivlp(arg1);
1117
1118	res->rtyp = INTVEC_CMD;
1119	res->data = result;
1120
1121	return FALSE;
1122	}
1123	else
1124	#ifdef MpDiv
1125	if(strcmp(sys_cmd, "MpDiv") == 0)
1126	{
1127	if(h==NULL \|\| h->Typ() != POLY_CMD \|\|
1128	h->next == NULL \|\| h->next->Typ() != POLY_CMD)
1129	{
1130	Werror("system(\"MpDiv\",poly, poly) expected");
1131	return TRUE;
1132	}
1133	poly arg1 = (poly) h->Data();
1134	poly arg2 = (poly) h->next->Data();
1135
1136	poly result = MpDiv(arg1, arg2);
1137
1138	res->rtyp = POLY_CMD;
1139	res->data = result;
1140	return FALSE;
1141	}
1142	else
1143	#endif
1144	#ifdef MpMult
1145	if(strcmp(sys_cmd, "MpMult") == 0)
1146	{
1147	if(h==NULL \|\| h->Typ() != POLY_CMD \|\|
1148	h->next == NULL \|\| h->next->Typ() != POLY_CMD)
1149	{
1150	Werror("system(\"MpMult\",poly, poly) expected");
1151	return TRUE;
1152	}
1153	poly arg1 = (poly) h->Data();
1154	poly arg2 = (poly) h->next->Data();
1155
1156	poly result = MpMult(arg1, arg2);
1157	res->rtyp = POLY_CMD;
1158	res->data = result;
1159	return FALSE;
1160	}
1161	else
1162	#endif
1163	if (strcmp(sys_cmd, "MivSame") == 0)
1164	{
1165	if(h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1166	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD )
1167	{
1168	Werror("system(\"MivSame\", intvec, intvec) expected");
1169	return TRUE;
1170	}
1171	/*
1172	if (((intvec*) h->Data())->length() != currRing->N \|\|
1173	((intvec*) h->next->Data())->length() != currRing->N)
1174	{
1175	Werror("system(\"MivSame\" ...) intvecs not of length %d\n",
1176	currRing->N);
1177	return TRUE;
1178	}
1179	*/
1180	intvec* arg1 = (intvec*) h->Data();
1181	intvec* arg2 = (intvec*) h->next->Data();
1182	/*
1183	poly result = (poly) MivSame(arg1, arg2);
1184
1185	res->rtyp = POLY_CMD;
1186	res->data = (poly) result;
1187	*/
1188	res->rtyp = INT_CMD;
1189	res->data = (void*)(long) MivSame(arg1, arg2);
1190	return FALSE;
1191	}
1192	else
1193	if (strcmp(sys_cmd, "M3ivSame") == 0)
1194	{
1195	if(h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1196	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1197	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD )
1198	{
1199	Werror("system(\"M3ivSame\", intvec, intvec, intvec) expected");
1200	return TRUE;
1201	}
1202	/*
1203	if (((intvec*) h->Data())->length() != currRing->N \|\|
1204	((intvec*) h->next->Data())->length() != currRing->N \|\|
1205	((intvec*) h->next->next->Data())->length() != currRing->N )
1206	{
1207	Werror("system(\"M3ivSame\" ...) intvecs not of length %d\n",
1208	currRing->N);
1209	return TRUE;
1210	}
1211	*/
1212	intvec* arg1 = (intvec*) h->Data();
1213	intvec* arg2 = (intvec*) h->next->Data();
1214	intvec* arg3 = (intvec*) h->next->next->Data();
1215	/*
1216	poly result = (poly) M3ivSame(arg1, arg2, arg3);
1217
1218	res->rtyp = POLY_CMD;
1219	res->data = (poly) result;
1220	*/
1221	res->rtyp = INT_CMD;
1222	res->data = (void*)(long) M3ivSame(arg1, arg2, arg3);
1223	return FALSE;
1224	}
1225	else
1226	if(strcmp(sys_cmd, "MwalkInitialForm") == 0)
1227	{
1228	if(h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1229	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD)
1230	{
1231	Werror("system(\"MwalkInitialForm\", ideal, intvec) expected");
1232	return TRUE;
1233	}
1234	if(((intvec*) h->next->Data())->length() != currRing->N)
1235	{
1236	Werror("system \"MwalkInitialForm\"...) intvec not of length %d\n",
1237	currRing->N);
1238	return TRUE;
1239	}
1240	ideal id = (ideal) h->Data();
1241	intvec* int_w = (intvec*) h->next->Data();
1242	ideal result = (ideal) MwalkInitialForm(id, int_w);
1243
1244	res->rtyp = IDEAL_CMD;
1245	res->data = result;
1246	return FALSE;
1247	}
1248	else
1249	/************ Perturbation walk ********/
1250	if(strcmp(sys_cmd, "MivMatrixOrder") == 0)
1251	{
1252	if(h==NULL \|\| h->Typ() != INTVEC_CMD)
1253	{
1254	Werror("system(\"MivMatrixOrder\",intvec) expected");
1255	return TRUE;
1256	}
1257	intvec* arg1 = (intvec*) h->Data();
1258
1259	intvec* result = MivMatrixOrder(arg1);
1260
1261	res->rtyp = INTVEC_CMD;
1262	res->data = result;
1263	return FALSE;
1264	}
1265	else
1266	if(strcmp(sys_cmd, "MivMatrixOrderdp") == 0)
1267	{
1268	if(h==NULL \|\| h->Typ() != INT_CMD)
1269	{
1270	Werror("system(\"MivMatrixOrderdp\",intvec) expected");
1271	return TRUE;
1272	}
1273	int arg1 = (int) ((long)(h->Data()));
1274
1275	intvec* result = (intvec*) MivMatrixOrderdp(arg1);
1276
1277	res->rtyp = INTVEC_CMD;
1278	res->data = result;
1279	return FALSE;
1280	}
1281	else
1282	if(strcmp(sys_cmd, "MPertVectors") == 0)
1283	{
1284
1285	if(h==NULL \|\| h->Typ() != IDEAL_CMD \|\|
1286	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1287	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD)
1288	{
1289	Werror("system(\"MPertVectors\",ideal, intvec, int) expected");
1290	return TRUE;
1291	}
1292
1293	ideal arg1 = (ideal) h->Data();
1294	intvec* arg2 = (intvec*) h->next->Data();
1295	int arg3 = (int) ((long)(h->next->next->Data()));
1296
1297	intvec* result = (intvec*) MPertVectors(arg1, arg2, arg3);
1298
1299	res->rtyp = INTVEC_CMD;
1300	res->data = result;
1301	return FALSE;
1302	}
1303	else
1304	if(strcmp(sys_cmd, "MPertVectorslp") == 0)
1305	{
1306
1307	if(h==NULL \|\| h->Typ() != IDEAL_CMD \|\|
1308	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1309	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD)
1310	{
1311	Werror("system(\"MPertVectorslp\",ideal, intvec, int) expected");
1312	return TRUE;
1313	}
1314
1315	ideal arg1 = (ideal) h->Data();
1316	intvec* arg2 = (intvec*) h->next->Data();
1317	int arg3 = (int) ((long)(h->next->next->Data()));
1318
1319	intvec* result = (intvec*) MPertVectorslp(arg1, arg2, arg3);
1320
1321	res->rtyp = INTVEC_CMD;
1322	res->data = result;
1323	return FALSE;
1324	}
1325	/************ fractal walk ********/
1326	else
1327	if(strcmp(sys_cmd, "Mfpertvector") == 0)
1328	{
1329	if(h==NULL \|\| h->Typ() != IDEAL_CMD \|\|
1330	h->next==NULL \|\| h->next->Typ() != INTVEC_CMD )
1331	{
1332	Werror("system(\"Mfpertvector\", ideal,intvec) expected");
1333	return TRUE;
1334	}
1335	ideal arg1 = (ideal) h->Data();
1336	intvec* arg2 = (intvec*) h->next->Data();
1337	intvec* result = Mfpertvector(arg1, arg2);
1338
1339	res->rtyp = INTVEC_CMD;
1340	res->data = result;
1341	return FALSE;
1342	}
1343	else
1344	if(strcmp(sys_cmd, "MivUnit") == 0)
1345	{
1346	int arg1 = (int) ((long)(h->Data()));
1347
1348	intvec* result = (intvec*) MivUnit(arg1);
1349
1350	res->rtyp = INTVEC_CMD;
1351	res->data = result;
1352	return FALSE;
1353	}
1354	else
1355	if(strcmp(sys_cmd, "MivWeightOrderlp") == 0)
1356	{
1357	if(h==NULL \|\| h->Typ() != INTVEC_CMD)
1358	{
1359	Werror("system(\"MivWeightOrderlp\",intvec) expected");
1360	return TRUE;
1361	}
1362	intvec* arg1 = (intvec*) h->Data();
1363	intvec* result = MivWeightOrderlp(arg1);
1364
1365	res->rtyp = INTVEC_CMD;
1366	res->data = result;
1367	return FALSE;
1368	}
1369	else
1370	if(strcmp(sys_cmd, "MivWeightOrderdp") == 0)
1371	{
1372	if(h==NULL \|\| h->Typ() != INTVEC_CMD)
1373	{
1374	Werror("system(\"MivWeightOrderdp\",intvec) expected");
1375	return TRUE;
1376	}
1377	intvec* arg1 = (intvec*) h->Data();
1378	//int arg2 = (int) h->next->Data();
1379
1380	intvec* result = MivWeightOrderdp(arg1);
1381
1382	res->rtyp = INTVEC_CMD;
1383	res->data = result;
1384	return FALSE;
1385	}
1386	else
1387	if(strcmp(sys_cmd, "MivMatrixOrderlp") == 0)
1388	{
1389	if(h==NULL \|\| h->Typ() != INT_CMD)
1390	{
1391	Werror("system(\"MivMatrixOrderlp\",int) expected");
1392	return TRUE;
1393	}
1394	int arg1 = (int) ((long)(h->Data()));
1395
1396	intvec* result = (intvec*) MivMatrixOrderlp(arg1);
1397
1398	res->rtyp = INTVEC_CMD;
1399	res->data = result;
1400	return FALSE;
1401	}
1402	else
1403	if (strcmp(sys_cmd, "MkInterRedNextWeight") == 0)
1404	{
1405	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1406	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1407	h->next->next == NULL \|\| h->next->next->Typ() != IDEAL_CMD)
1408	{
1409	Werror("system(\"MkInterRedNextWeight\", intvec, intvec, ideal) expected");
1410	return TRUE;
1411	}
1412
1413	if (((intvec*) h->Data())->length() != currRing->N \|\|
1414	((intvec*) h->next->Data())->length() != currRing->N)
1415	{
1416	Werror("system(\"MkInterRedNextWeight\" ...) intvecs not of length %d\n",
1417	currRing->N);
1418	return TRUE;
1419	}
1420	intvec* arg1 = (intvec*) h->Data();
1421	intvec* arg2 = (intvec*) h->next->Data();
1422	ideal arg3 = (ideal) h->next->next->Data();
1423
1424	intvec* result = (intvec*) MkInterRedNextWeight(arg1, arg2, arg3);
1425
1426	res->rtyp = INTVEC_CMD;
1427	res->data = result;
1428
1429	return FALSE;
1430	}
1431	else
1432	#ifdef MPertNextWeight
1433	if (strcmp(sys_cmd, "MPertNextWeight") == 0)
1434	{
1435	if (h == NULL \|\| h->Typ() != INTVEC_CMD \|\|
1436	h->next == NULL \|\| h->next->Typ() != IDEAL_CMD \|\|
1437	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD)
1438	{
1439	Werror("system(\"MPertNextWeight\", intvec, ideal, int) expected");
1440	return TRUE;
1441	}
1442
1443	if (((intvec*) h->Data())->length() != currRing->N)
1444	{
1445	Werror("system(\"MPertNextWeight\" ...) intvecs not of length %d\n",
1446	currRing->N);
1447	return TRUE;
1448	}
1449	intvec* arg1 = (intvec*) h->Data();
1450	ideal arg2 = (ideal) h->next->Data();
1451	int arg3 = (int) h->next->next->Data();
1452
1453	intvec* result = (intvec*) MPertNextWeight(arg1, arg2, arg3);
1454
1455	res->rtyp = INTVEC_CMD;
1456	res->data = result;
1457
1458	return FALSE;
1459	}
1460	else
1461	#endif //MPertNextWeight
1462	#ifdef Mivperttarget
1463	if (strcmp(sys_cmd, "Mivperttarget") == 0)
1464	{
1465	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1466	h->next == NULL \|\| h->next->Typ() != INT_CMD )
1467	{
1468	Werror("system(\"Mivperttarget\", ideal, int) expected");
1469	return TRUE;
1470	}
1471
1472	ideal arg1 = (ideal) h->Data();
1473	int arg2 = (int) h->next->Data();
1474
1475	intvec* result = (intvec*) Mivperttarget(arg1, arg2);
1476
1477	res->rtyp = INTVEC_CMD;
1478	res->data = result;
1479
1480	return FALSE;
1481	}
1482	else
1483	#endif //Mivperttarget
1484	if (strcmp(sys_cmd, "Mwalk") == 0)
1485	{
1486	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1487	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1488	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1489	{
1490	Werror("system(\"Mwalk\", ideal, intvec, intvec) expected");
1491	return TRUE;
1492	}
1493
1494	if (((intvec*) h->next->Data())->length() != currRing->N &&
1495	((intvec*) h->next->next->Data())->length() != currRing->N )
1496	{
1497	Werror("system(\"Mwalk\" ...) intvecs not of length %d\n",
1498	currRing->N);
1499	return TRUE;
1500	}
1501	ideal arg1 = (ideal) h->Data();
1502	intvec* arg2 = (intvec*) h->next->Data();
1503	intvec* arg3 = (intvec*) h->next->next->Data();
1504
1505
1506	ideal result = (ideal) Mwalk(arg1, arg2, arg3);
1507
1508	res->rtyp = IDEAL_CMD;
1509	res->data = result;
1510
1511	return FALSE;
1512	}
1513	else
1514	#ifdef MPWALK_ORIG
1515	if (strcmp(sys_cmd, "Mpwalk") == 0)
1516	{
1517	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1518	h->next == NULL \|\| h->next->Typ() != INT_CMD \|\|
1519	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD \|\|
1520	h->next->next->next == NULL \|\|
1521	h->next->next->next->Typ() != INTVEC_CMD \|\|
1522	h->next->next->next->next == NULL \|\|
1523	h->next->next->next->next->Typ() != INTVEC_CMD)
1524	{
1525	Werror("system(\"Mpwalk\", ideal, int, int, intvec, intvec) expected");
1526	return TRUE;
1527	}
1528
1529	if (((intvec*) h->next->next->next->Data())->length() != currRing->N &&
1530	((intvec*) h->next->next->next->next->Data())->length()!=currRing->N)
1531	{
1532	Werror("system(\"Mpwalk\" ...) intvecs not of length %d\n",
1533	currRing->N);
1534	return TRUE;
1535	}
1536	ideal arg1 = (ideal) h->Data();
1537	int arg2 = (int) h->next->Data();
1538	int arg3 = (int) h->next->next->Data();
1539	intvec* arg4 = (intvec*) h->next->next->next->Data();
1540	intvec* arg5 = (intvec*) h->next->next->next->next->Data();
1541
1542
1543	ideal result = (ideal) Mpwalk(arg1, arg2, arg3, arg4, arg5);
1544
1545	res->rtyp = IDEAL_CMD;
1546	res->data = result;
1547
1548	return FALSE;
1549	}
1550	else
1551	#endif
1552	if (strcmp(sys_cmd, "Mpwalk") == 0)
1553	{
1554	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1555	h->next == NULL \|\| h->next->Typ() != INT_CMD \|\|
1556	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD \|\|
1557	h->next->next->next == NULL \|\|
1558	h->next->next->next->Typ() != INTVEC_CMD \|\|
1559	h->next->next->next->next == NULL \|\|
1560	h->next->next->next->next->Typ() != INTVEC_CMD\|\|
1561	h->next->next->next->next->next == NULL \|\|
1562	h->next->next->next->next->next->Typ() != INT_CMD)
1563	{
1564	Werror("system(\"Mpwalk\", ideal, int, int, intvec, intvec, int) expected");
1565	return TRUE;
1566	}
1567
1568	if (((intvec*) h->next->next->next->Data())->length() != currRing->N &&
1569	((intvec*) h->next->next->next->next->Data())->length()!=currRing->N)
1570	{
1571	Werror("system(\"Mpwalk\" ...) intvecs not of length %d\n",
1572	currRing->N);
1573	return TRUE;
1574	}
1575	ideal arg1 = (ideal) h->Data();
1576	int arg2 = (int) ((long)(h->next->Data()));
1577	int arg3 = (int) ((long)(h->next->next->Data()));
1578	intvec* arg4 = (intvec*) h->next->next->next->Data();
1579	intvec* arg5 = (intvec*) h->next->next->next->next->Data();
1580	int arg6 = (int) ((long)(h->next->next->next->next->next->Data()));
1581
1582
1583	ideal result = (ideal) Mpwalk(arg1, arg2, arg3, arg4, arg5, arg6);
1584
1585	res->rtyp = IDEAL_CMD;
1586	res->data = result;
1587
1588	return FALSE;
1589	}
1590	else
1591	if (strcmp(sys_cmd, "MAltwalk1") == 0)
1592	{
1593	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1594	h->next == NULL \|\| h->next->Typ() != INT_CMD \|\|
1595	h->next->next == NULL \|\| h->next->next->Typ() != INT_CMD \|\|
1596	h->next->next->next == NULL \|\|
1597	h->next->next->next->Typ() != INTVEC_CMD \|\|
1598	h->next->next->next->next == NULL \|\|
1599	h->next->next->next->next->Typ() != INTVEC_CMD)
1600	{
1601	Werror("system(\"MAltwalk1\", ideal, int, int, intvec, intvec) expected");
1602	return TRUE;
1603	}
1604
1605	if (((intvec*) h->next->next->next->Data())->length() != currRing->N &&
1606	((intvec*) h->next->next->next->next->Data())->length()!=currRing->N)
1607	{
1608	Werror("system(\"MAltwalk1\" ...) intvecs not of length %d\n",
1609	currRing->N);
1610	return TRUE;
1611	}
1612	ideal arg1 = (ideal) h->Data();
1613	int arg2 = (int) ((long)(h->next->Data()));
1614	int arg3 = (int) ((long)(h->next->next->Data()));
1615	intvec* arg4 = (intvec*) h->next->next->next->Data();
1616	intvec* arg5 = (intvec*) h->next->next->next->next->Data();
1617
1618
1619	ideal result = (ideal) MAltwalk1(arg1, arg2, arg3, arg4, arg5);
1620
1621	res->rtyp = IDEAL_CMD;
1622	res->data = result;
1623
1624	return FALSE;
1625	}
1626	#ifdef MFWALK_ALT
1627	else
1628	if (strcmp(sys_cmd, "Mfwalk_alt") == 0)
1629	{
1630	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1631	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1632	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD \|\|
1633	h->next->next->next == NULL \|\| h->next->next->next->Typ() !=INT_CMD)
1634	{
1635	Werror("system(\"Mfwalk\", ideal, intvec, intvec,int) expected");
1636	return TRUE;
1637	}
1638
1639	if (((intvec*) h->next->Data())->length() != currRing->N &&
1640	((intvec*) h->next->next->Data())->length() != currRing->N )
1641	{
1642	Werror("system(\"Mfwalk\" ...) intvecs not of length %d\n",
1643	currRing->N);
1644	return TRUE;
1645	}
1646	ideal arg1 = (ideal) h->Data();
1647	intvec* arg2 = (intvec*) h->next->Data();
1648	intvec* arg3 = (intvec*) h->next->next->Data();
1649	int arg4 = (int) h->next->next->next->Data();
1650
1651	ideal result = (ideal) Mfwalk_alt(arg1, arg2, arg3, arg4);
1652
1653	res->rtyp = IDEAL_CMD;
1654	res->data = result;
1655
1656	return FALSE;
1657	}
1658	#endif
1659	else
1660	if (strcmp(sys_cmd, "Mfwalk") == 0)
1661	{
1662	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1663	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1664	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1665	{
1666	Werror("system(\"Mfwalk\", ideal, intvec, intvec) expected");
1667	return TRUE;
1668	}
1669
1670	if (((intvec*) h->next->Data())->length() != currRing->N &&
1671	((intvec*) h->next->next->Data())->length() != currRing->N )
1672	{
1673	Werror("system(\"Mfwalk\" ...) intvecs not of length %d\n",
1674	currRing->N);
1675	return TRUE;
1676	}
1677	ideal arg1 = (ideal) h->Data();
1678	intvec* arg2 = (intvec*) h->next->Data();
1679	intvec* arg3 = (intvec*) h->next->next->Data();
1680
1681	ideal result = (ideal) Mfwalk(arg1, arg2, arg3);
1682
1683	res->rtyp = IDEAL_CMD;
1684	res->data = result;
1685
1686	return FALSE;
1687	}
1688	else
1689
1690	#ifdef TRAN_Orig
1691	if (strcmp(sys_cmd, "TranMImprovwalk") == 0)
1692	{
1693	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1694	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1695	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1696	{
1697	Werror("system(\"TranMImprovwalk\", ideal, intvec, intvec) expected");
1698	return TRUE;
1699	}
1700
1701	if (((intvec*) h->next->Data())->length() != currRing->N &&
1702	((intvec*) h->next->next->Data())->length() != currRing->N )
1703	{
1704	Werror("system(\"TranMImprovwalk\" ...) intvecs not of length %d\n",
1705	currRing->N);
1706	return TRUE;
1707	}
1708	ideal arg1 = (ideal) h->Data();
1709	intvec* arg2 = (intvec*) h->next->Data();
1710	intvec* arg3 = (intvec*) h->next->next->Data();
1711
1712
1713	ideal result = (ideal) TranMImprovwalk(arg1, arg2, arg3);
1714
1715	res->rtyp = IDEAL_CMD;
1716	res->data = result;
1717
1718	return FALSE;
1719	}
1720	else
1721	#endif
1722	if (strcmp(sys_cmd, "MAltwalk2") == 0)
1723	{
1724	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1725	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1726	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD)
1727	{
1728	Werror("system(\"MAltwalk2\", ideal, intvec, intvec) expected");
1729	return TRUE;
1730	}
1731
1732	if (((intvec*) h->next->Data())->length() != currRing->N &&
1733	((intvec*) h->next->next->Data())->length() != currRing->N )
1734	{
1735	Werror("system(\"MAltwalk2\" ...) intvecs not of length %d\n",
1736	currRing->N);
1737	return TRUE;
1738	}
1739	ideal arg1 = (ideal) h->Data();
1740	intvec* arg2 = (intvec*) h->next->Data();
1741	intvec* arg3 = (intvec*) h->next->next->Data();
1742
1743
1744	ideal result = (ideal) MAltwalk2(arg1, arg2, arg3);
1745
1746	res->rtyp = IDEAL_CMD;
1747	res->data = result;
1748
1749	return FALSE;
1750	}
1751	else
1752	if (strcmp(sys_cmd, "TranMImprovwalk") == 0)
1753	{
1754	if (h == NULL \|\| h->Typ() != IDEAL_CMD \|\|
1755	h->next == NULL \|\| h->next->Typ() != INTVEC_CMD \|\|
1756	h->next->next == NULL \|\| h->next->next->Typ() != INTVEC_CMD\|\|
1757	h->next->next->next == NULL \|\| h->next->next->next->Typ() != INT_CMD)
1758	{
1759	Werror("system(\"TranMImprovwalk\", ideal, intvec, intvec, int) expected");
1760	return TRUE;
1761	}
1762
1763	if (((intvec*) h->next->Data())->length() != currRing->N &&
1764	((intvec*) h->next->next->Data())->length() != currRing->N )
1765	{
1766	Werror("system(\"TranMImprovwalk\" ...) intvecs not of length %d\n",
1767	currRing->N);
1768	return TRUE;
1769	}
1770	ideal arg1 = (ideal) h->Data();
1771	intvec* arg2 = (intvec*) h->next->Data();
1772	intvec* arg3 = (intvec*) h->next->next->Data();
1773	int arg4 = (int) ((long)(h->next->next->next->Data()));
1774
1775	ideal result = (ideal) TranMImprovwalk(arg1, arg2, arg3, arg4);
1776
1777	res->rtyp = IDEAL_CMD;
1778	res->data = result;
1779
1780	return FALSE;
1781	}
1782	else
1783	#endif
1784	/================= Extended system call ========================/
1785	{
1786	#ifndef MAKE_DISTRIBUTION
1787	return(jjEXTENDED_SYSTEM(res, args));
1788	#else
1789	Werror( "system(\"%s\",...) %s", sys_cmd, feNotImplemented );
1790	#endif
1791	}
1792	} /* typ==string */
1793	return TRUE;
1794	}
1795
1796
1797	#ifdef HAVE_EXTENDED_SYSTEM
1798	// You can put your own system calls here
1799	#include "../kernel/fglmcomb.cc"
1800	#include "fglm.h"
1801	#ifdef HAVE_NEWTON
1802	#include <hc_newton.h>
1803	#endif
1804	#include "mpsr.h"
1805	#include "mod_raw.h"
1806	#include "ratgring.h"
1807	#include "shiftgb.h"
1808
1809	static BOOLEAN jjEXTENDED_SYSTEM(leftv res, leftv h)
1810	{
1811	if(h->Typ() == STRING_CMD)
1812	{
1813	char sys_cmd=(char )(h->Data());
1814	h=h->next;
1815	/==================== locNF ======================================/
1816	if(strcmp(sys_cmd,"locNF")==0)
1817	{
1818	if (h != NULL && h->Typ() == VECTOR_CMD)
1819	{
1820	poly f=(poly)h->Data();
1821	h=h->next;
1822	if (h != NULL && h->Typ() == MODUL_CMD)
1823	{
1824	ideal m=(ideal)h->Data();
1825	assumeStdFlag(h);
1826	h=h->next;
1827	if (h != NULL && h->Typ() == INT_CMD)
1828	{
1829	int n=(int)((long)h->Data());
1830	h=h->next;
1831	if (h != NULL && h->Typ() == INTVEC_CMD)
1832	{
1833	intvec v=(intvec )h->Data();
1834
1835	/* == now the work starts == */
1836
1837	short * iv=iv2array(v);
1838	poly r=0;
1839	poly hp=ppJetW(f,n,iv);
1840	int s=MATCOLS(m);
1841	int j=0;
1842	matrix T=mpInitI(s,1,0);
1843
1844	while (hp != NULL)
1845	{
1846	if (pDivisibleBy(m->m[j],hp))
1847	{
1848	if (MATELEM(T,j+1,1)==0)
1849	{
1850	MATELEM(T,j+1,1)=pDivideM(pHead(hp),pHead(m->m[j]));
1851	}
1852	else
1853	{
1854	pAdd(MATELEM(T,j+1,1),pDivideM(pHead(hp),pHead(m->m[j])));
1855	}
1856	hp=ppJetW(ksOldSpolyRed(m->m[j],hp,0),n,iv);
1857	j=0;
1858	}
1859	else
1860	{
1861	if (j==s-1)
1862	{
1863	r=pAdd(r,pHead(hp));
1864	hp=pLmDeleteAndNext(hp); /* hp=pSub(hp,pHead(hp));*/
1865	j=0;
1866	}
1867	else
1868	{
1869	j++;
1870	}
1871	}
1872	}
1873
1874	matrix Temp=mpTransp((matrix) idVec2Ideal(r));
1875	matrix R=mpNew(MATCOLS((matrix) idVec2Ideal(f)),1);
1876	for (int k=1;k<=MATROWS(Temp);k++)
1877	{
1878	MATELEM(R,k,1)=MATELEM(Temp,k,1);
1879	}
1880
1881	lists L=(lists)omAllocBin(slists_bin);
1882	L->Init(2);
1883	L->m[0].rtyp=MATRIX_CMD; L->m[0].data=(void *)R;
1884	L->m[1].rtyp=MATRIX_CMD; L->m[1].data=(void *)T;
1885	res->data=L;
1886	res->rtyp=LIST_CMD;
1887	// iv aufraeumen
1888	omFree(iv);
1889	}
1890	else
1891	{
1892	Warn ("4th argument: must be an intvec!");
1893	}
1894	}
1895	else
1896	{
1897	Warn("3rd argument must be an int!!");
1898	}
1899	}
1900	else
1901	{
1902	Warn("2nd argument must be a module!");
1903	}
1904	}
1905	else
1906	{
1907	Warn("1st argument must be a vector!");
1908	}
1909	return FALSE;
1910	}
1911	else
1912	#ifdef RDEBUG
1913	/==================== poly debug ==================================/
1914	if(strcmp(sys_cmd,"p")==0)
1915	{
1916	pDebugPrint((poly)h->Data());
1917	return FALSE;
1918	}
1919	else
1920	/==================== ring debug ==================================/
1921	if(strcmp(sys_cmd,"r")==0)
1922	{
1923	rDebugPrint((ring)h->Data());
1924	return FALSE;
1925	}
1926	else
1927	#endif
1928	/==================== mtrack ==================================/
1929	if(strcmp(sys_cmd,"mtrack")==0)
1930	{
1931	#ifdef OM_TRACK
1932	om_Opts.MarkAsStatic = 1;
1933	FILE *fd = NULL;
1934	int max = 5;
1935	while (h != NULL)
1936	{
1937	omMarkAsStaticAddr(h);
1938	if (fd == NULL && h->Typ()==STRING_CMD)
1939	{
1940	fd = fopen((char*) h->Data(), "w");
1941	if (fd == NULL)
1942	Warn("Can not open %s for writing og mtrack. Using stdout");
1943	}
1944	if (h->Typ() == INT_CMD)
1945	{
1946	max = (int)(long)h->Data();
1947	}
1948	h = h->Next();
1949	}
1950	omPrintUsedTrackAddrs((fd == NULL ? stdout : fd), max);
1951	if (fd != NULL) fclose(fd);
1952	om_Opts.MarkAsStatic = 0;
1953	return FALSE;
1954	#else
1955	WerrorS("mtrack not supported without OM_TRACK");
1956	return TRUE;
1957	#endif
1958	}
1959	/==================== mtrack_all ==================================/
1960	if(strcmp(sys_cmd,"mtrack_all")==0)
1961	{
1962	#ifdef OM_TRACK
1963	om_Opts.MarkAsStatic = 1;
1964	FILE *fd = NULL;
1965	if ((h!=NULL) &&(h->Typ()==STRING_CMD))
1966	{
1967	fd = fopen((char*) h->Data(), "w");
1968	if (fd == NULL)
1969	Warn("Can not open %s for writing og mtrack. Using stdout");
1970	omMarkAsStaticAddr(h);
1971	}
1972	// OB: TBC print to fd
1973	omPrintUsedAddrs((fd == NULL ? stdout : fd), 5);
1974	if (fd != NULL) fclose(fd);
1975	om_Opts.MarkAsStatic = 0;
1976	return FALSE;
1977	#else
1978	WerrorS("mtrack not supported without OM_TRACK");
1979	return TRUE;
1980	#endif
1981	}
1982	else
1983	/==================== backtrace ==================================/
1984	if(strcmp(sys_cmd,"backtrace")==0)
1985	{
1986	#ifndef OM_NDEBUG
1987	omPrintCurrentBackTrace(stdout);
1988	return FALSE;
1989	#else
1990	WerrorS("btrack not supported without OM_TRACK");
1991	return TRUE;
1992	#endif
1993	}
1994	else
1995	/==================== naIdeal ==================================/
1996	if(strcmp(sys_cmd,"naIdeal")==0)
1997	{
1998	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
1999	{
2000	naSetIdeal((ideal)h->Data());
2001	return FALSE;
2002	}
2003	else
2004	WerrorS("ideal expected");
2005	}
2006	else
2007	/==================== isSqrFree =============================/
2008	#ifdef HAVE_FACTORY
2009	if(strcmp(sys_cmd,"isSqrFree")==0)
2010	{
2011	if ((h!=NULL) &&(h->Typ()==POLY_CMD))
2012	{
2013	res->rtyp=INT_CMD;
2014	res->data=(void *)(long) singclap_isSqrFree((poly)h->Data());
2015	return FALSE;
2016	}
2017	else
2018	WerrorS("poly expected");
2019	}
2020	else
2021	#endif
2022	/==================== pDivStat =============================/
2023	#if defined(PDEBUG) \|\| defined(PDIV_DEBUG)
2024	if(strcmp(sys_cmd,"pDivStat")==0)
2025	{
2026	extern void pPrintDivisbleByStat();
2027	pPrintDivisbleByStat();
2028	return FALSE;
2029	}
2030	else
2031	#endif
2032	/==================== alarm ==================================/
2033	#ifdef unix
2034	if(strcmp(sys_cmd,"alarm")==0)
2035	{
2036	if ((h!=NULL) &&(h->Typ()==INT_CMD))
2037	{
2038	// standard variant -> SIGALARM (standard: abort)
2039	//alarm((unsigned)h->next->Data());
2040	// process time (user +system): SIGVTALARM
2041	struct itimerval t,o;
2042	memset(&t,0,sizeof(t));
2043	t.it_value.tv_sec =(unsigned)((unsigned long)h->Data());
2044	setitimer(ITIMER_VIRTUAL,&t,&o);
2045	return FALSE;
2046	}
2047	else
2048	WerrorS("int expected");
2049	}
2050	else
2051	#endif
2052	/==================== red =============================/
2053	#if 0
2054	if(strcmp(sys_cmd,"red")==0)
2055	{
2056	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
2057	{
2058	res->rtyp=IDEAL_CMD;
2059	res->data=(void *)kStdred((ideal)h->Data(),NULL,testHomog,NULL);
2060	setFlag(res,FLAG_STD);
2061	return FALSE;
2062	}
2063	else
2064	WerrorS("ideal expected");
2065	}
2066	else
2067	#endif
2068	#ifdef HAVE_FACTORY
2069	/==================== fastcomb =============================/
2070	if(strcmp(sys_cmd,"fastcomb")==0)
2071	{
2072	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
2073	{
2074	int i=0;
2075	if (h->next!=NULL)
2076	{
2077	if (h->next->Typ()!=POLY_CMD)
2078	{
2079	Warn("Wrong types for poly= comb(ideal,poly)");
2080	}
2081	}
2082	res->rtyp=POLY_CMD;
2083	res->data=(void *) fglmLinearCombination(
2084	(ideal)h->Data(),(poly)h->next->Data());
2085	return FALSE;
2086	}
2087	else
2088	WerrorS("ideal expected");
2089	}
2090	else
2091	/==================== comb =============================/
2092	if(strcmp(sys_cmd,"comb")==0)
2093	{
2094	if ((h!=NULL) &&(h->Typ()==IDEAL_CMD))
2095	{
2096	int i=0;
2097	if (h->next!=NULL)
2098	{
2099	if (h->next->Typ()!=POLY_CMD)
2100	{
2101	Warn("Wrong types for poly= comb(ideal,poly)");
2102	}
2103	}
2104	res->rtyp=POLY_CMD;
2105	res->data=(void *)fglmNewLinearCombination(
2106	(ideal)h->Data(),(poly)h->next->Data());
2107	return FALSE;
2108	}
2109	else
2110	WerrorS("ideal expected");
2111	}
2112	else
2113	#endif
2114	#ifdef FACTORY_GCD_TEST
2115	/=======================gcd Testerei ================================/
2116	if ( ! strcmp( sys_cmd, "setgcd" ) ) {
2117	if ( (h != NULL) && (h->Typ() == INT_CMD) ) {
2118	CFPrimitiveGcdUtil::setAlgorithm( (int)h->Data() );
2119	return FALSE;
2120	} else
2121	WerrorS("int expected");
2122	}
2123	else
2124	#endif
2125
2126	#ifdef FACTORY_GCD_TIMING
2127	if ( ! strcmp( sys_cmd, "gcdtime" ) ) {
2128	TIMING_PRINT( contentTimer, "time used for content: " );
2129	TIMING_PRINT( algContentTimer, "time used for algContent: " );
2130	TIMING_PRINT( algLcmTimer, "time used for algLcm: " );
2131	TIMING_RESET( contentTimer );
2132	TIMING_RESET( algContentTimer );
2133	TIMING_RESET( algLcmTimer );
2134	return FALSE;
2135	}
2136	else
2137	#endif
2138
2139	#ifdef FACTORY_GCD_STAT
2140	if ( ! strcmp( sys_cmd, "gcdstat" ) ) {
2141	printGcdTotal();
2142	printContTotal();
2143	resetGcdTotal();
2144	resetContTotal();
2145	return FALSE;
2146	}
2147	else
2148	#endif
2149	#if !defined(HAVE_NS)
2150	/==================== lib ==================================/
2151	if(strcmp(sys_cmd,"LIB")==0)
2152	{
2153	idhdl hh=idroot->get((char*)h->Data(),0);
2154	if ((hh!=NULL)&&(IDTYP(hh)==PROC_CMD))
2155	{
2156	res->rtyp=STRING_CMD;
2157	char *r=iiGetLibName(IDPROC(hh));
2158	if (r==NULL) r="";
2159	res->data=omStrDup(r);
2160	return FALSE;
2161	}
2162	else
2163	Warn("`%s` not found",(char*)h->Data());
2164	}
2165	else
2166	#endif
2167	/==================== listall ===================================/
2168	if(strcmp(sys_cmd,"listall")==0)
2169	{
2170	int showproc=0;
2171	if ((h!=NULL) && (h->Typ()==INT_CMD)) showproc=(int)((long)h->Data());
2172	#ifdef HAVE_NS
2173	listall(showproc);
2174	#else
2175	idhdl hh=IDROOT;
2176	while (hh!=NULL)
2177	{
2178	if (IDDATA(hh)==(void *)currRing) PrintS("(R)");
2179	else PrintS(" ");
2180	Print("::%s, typ %s level %d\n",
2181	IDID(hh),Tok2Cmdname(IDTYP(hh)),IDLEV(hh));
2182	hh=IDNEXT(hh);
2183	}
2184	hh=IDROOT;
2185	while (hh!=NULL)
2186	{
2187	if ((IDTYP(hh)==RING_CMD)
2188	\|\| (IDTYP(hh)==QRING_CMD)
2189	\|\| (IDTYP(hh)==PACKAGE_CMD))
2190	{
2191	idhdl h2=IDRING(hh)->idroot;
2192	while (h2!=NULL)
2193	{
2194	if (IDDATA(h2)==(void *)currRing) PrintS("(R)");
2195	else PrintS(" ");
2196	Print("%s::%s, typ %s level %d\n",
2197	IDID(hh),IDID(h2),Tok2Cmdname(IDTYP(h2)),IDLEV(h2));
2198	h2=IDNEXT(h2);
2199	}
2200	}
2201	hh=IDNEXT(hh);
2202	}
2203	#endif /* HAVE_NS */
2204	return FALSE;
2205	}
2206	else
2207	/==================== proclist =================================/
2208	if(strcmp(sys_cmd,"proclist")==0)
2209	{
2210	piShowProcList();
2211	return FALSE;
2212	}
2213	else
2214	/* ==================== newton ================================*/
2215	#ifdef HAVE_NEWTON
2216	if(strcmp(sys_cmd,"newton")==0)
2217	{
2218	if ((h->Typ()!=POLY_CMD)
2219	\|\| (h->next->Typ()!=INT_CMD)
2220	\|\| (h->next->next->Typ()!=INT_CMD))
2221	{
2222	WerrorS("system(\"newton\",<poly>,<int>,<int>) expected");
2223	return TRUE;
2224	}
2225	poly p=(poly)(h->Data());
2226	int l=pLength(p);
2227	short points=(short )omAlloc(currRing->Nlsizeof(short));
2228	int i,j,k;
2229	k=0;
2230	poly pp=p;
2231	for (i=0;pp!=NULL;i++)
2232	{
2233	for(j=1;j<=currRing->N;j++)
2234	{
2235	points[k]=pGetExp(pp,j);
2236	k++;
2237	}
2238	pIter(pp);
2239	}
2240	hc_ERG r=hc_KOENIG(currRing->N, // dimension
2241	l, // number of points
2242	(short*) points, // points: x_1, y_1,z_1, x_2,y_2,z2,...
2243	currRing->OrdSgn==-1,
2244	(int) (h->next->Data()), // 1: Milnor, 0: Newton
2245	(int) (h->next->next->Data()) // debug
2246	);
2247	//----<>---Output-----------------------
2248
2249
2250	// PrintS("Bin jetzt in extra.cc bei der Auswertung.\n"); // **********
2251
2252
2253	lists L=(lists)omAllocBin(slists_bin);
2254	L->Init(6);
2255	L->m[0].rtyp=STRING_CMD; // newtonnumber;
2256	L->m[0].data=(void *)omStrDup(r.nZahl);
2257	L->m[1].rtyp=INT_CMD;
2258	L->m[1].data=(void *)r.achse; // flag for unoccupied axes
2259	L->m[2].rtyp=INT_CMD;
2260	L->m[2].data=(void *)r.deg; // #degenerations
2261	if ( r.deg != 0) // only if degenerations exist
2262	{
2263	L->m[3].rtyp=INT_CMD;
2264	L->m[3].data=(void *)r.anz_punkte; // #points
2265	//---<>--number of points------
2266	int anz = r.anz_punkte; // number of points
2267	int dim = (currRing->N); // dimension
2268	intvec* v = new intvec( anz*dim );
2269	for (i=0; i<anz*dim; i++) // copy points
2270	(*v)[i] = r.pu[i];
2271	L->m[4].rtyp=INTVEC_CMD;
2272	L->m[4].data=(void *)v;
2273	//---<>--degenerations---------
2274	int deg = r.deg; // number of points
2275	intvec* w = new intvec( r.speicher ); // necessary memeory
2276	i=0; // start copying
2277	do
2278	{
2279	(*w)[i] = r.deg_tab[i];
2280	i++;
2281	}
2282	while (r.deg_tab[i-1] != -2); // mark for end of list
2283	L->m[5].rtyp=INTVEC_CMD;
2284	L->m[5].data=(void *)w;
2285	}
2286	else
2287	{
2288	L->m[3].rtyp=INT_CMD; L->m[3].data=(char *)0;
2289	L->m[4].rtyp=DEF_CMD;
2290	L->m[5].rtyp=DEF_CMD;
2291	}
2292
2293	res->data=(void *)L;
2294	res->rtyp=LIST_CMD;
2295	// free all pointer in r:
2296	delete[] r.nZahl;
2297	delete[] r.pu;
2298	delete[] r.deg_tab; // Ist das ein Problem??
2299
2300	omFreeSize((ADDRESS)points,currRing->Nlsizeof(short));
2301	return FALSE;
2302	}
2303	else
2304	#endif
2305	/==================== sdb_flags =================/
2306	#ifdef HAVE_SDB
2307	if (strcmp(sys_cmd, "sdb_flags") == 0)
2308	{
2309	if ((h!=NULL) && (h->Typ()==INT_CMD))
2310	{
2311	sdb_flags=(int)((long)h->Data());
2312	}
2313	else
2314	{
2315	WerrorS("system(\"sdb_flags\",`int`) expected");
2316	return TRUE;
2317	}
2318	return FALSE;
2319	}
2320	else
2321	/==================== sdb_edit =================/
2322	if (strcmp(sys_cmd, "sdb_edit") == 0)
2323	{
2324	if ((h!=NULL) && (h->Typ()==PROC_CMD))
2325	{
2326	procinfov p=(procinfov)h->Data();
2327	sdb_edit(p);
2328	}
2329	else
2330	{
2331	WerrorS("system(\"sdb_edit\",`proc`) expected");
2332	return TRUE;
2333	}
2334	return FALSE;
2335	}
2336	else
2337	#endif
2338	/==================== GF =================/
2339	#if 0 // for testing only
2340	if (strcmp(sys_cmd, "GF") == 0)
2341	{
2342	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2343	{
2344	int c=rChar(currRing);
2345	setCharacteristic( c,nfMinPoly[0], currRing->parameter[0][0] );
2346	CanonicalForm F( convSingGFFactoryGF( (poly)h->Data() ) );
2347	res->rtyp=POLY_CMD;
2348	res->data=convFactoryGFSingGF( F );
2349	return FALSE;
2350	}
2351	else { Werror("wrong typ"); return TRUE;}
2352	}
2353	else
2354	#endif
2355	/==================== stdX =================/
2356	if (strcmp(sys_cmd, "std") == 0)
2357	{
2358	ideal i1;
2359	int i2;
2360	if ((h!=NULL) && (h->Typ()==MODUL_CMD))
2361	{
2362	i1=(ideal)h->CopyD();
2363	h=h->next;
2364	}
2365	else return TRUE;
2366	if ((h!=NULL) && (h->Typ()==INT_CMD))
2367	{
2368	i2=(int)((long)h->Data());
2369	}
2370	else return TRUE;
2371	res->rtyp=MODUL_CMD;
2372	res->data=idXXX(i1,i2);
2373	return FALSE;
2374	}
2375	else
2376	/==================== SVD =================/
2377	#ifdef HAVE_SVD
2378	if (strcmp(sys_cmd, "svd") == 0)
2379	{
2380	extern lists testsvd(matrix M);
2381	res->rtyp=LIST_CMD;
2382	res->data=(char*)(testsvd((matrix)h->Data()));
2383	return FALSE;
2384	}
2385	else
2386	#endif
2387	#ifdef ix86_Win
2388	#ifdef HAVE_DL
2389	/==================== DLL =================/
2390	/* testing the DLL functionality under Win32 */
2391	if (strcmp(sys_cmd, "DLL") == 0)
2392	{
2393	typedef void (*Void_Func)();
2394	typedef int (*Int_Func)(int);
2395	void *hh=dynl_open("WinDllTest.dll");
2396	if ((h!=NULL) && (h->Typ()==INT_CMD))
2397	{
2398	int (*f)(int);
2399	if (hh!=NULL)
2400	{
2401	int (*f)(int);
2402	f=(Int_Func)dynl_sym(hh,"PlusDll");
2403	int i=10;
2404	if (f!=NULL) printf("%d\n",f(i));
2405	else PrintS("cannot find PlusDll\n");
2406	}
2407	}
2408	else
2409	{
2410	void (*f)();
2411	f= (Void_Func)dynl_sym(hh,"TestDll");
2412	if (f!=NULL) f();
2413	else PrintS("cannot find TestDll\n");
2414	}
2415	return FALSE;
2416	}
2417	else
2418	#endif
2419	#endif
2420	/==================== eigenvalues ==================================/
2421	#ifdef HAVE_EIGENVAL
2422	if(strcmp(sys_cmd,"eigenvals")==0)
2423	{
2424	return evEigenvals(res,h);
2425	}
2426	else
2427	#endif
2428	/==================== Gauss-Manin system ==================================/
2429	#ifdef HAVE_GMS
2430	if(strcmp(sys_cmd,"gmsnf")==0)
2431	{
2432	return gmsNF(res,h);
2433	}
2434	else
2435	#endif
2436	/==================== facstd_debug ==================================/
2437	#if !defined(NDEBUG)
2438	if(strcmp(sys_cmd,"facstd")==0)
2439	{
2440	extern int strat_nr;
2441	extern int strat_fac_debug;
2442	strat_fac_debug=(int)(long)h->Data();
2443	strat_nr=0;
2444	return FALSE;
2445	}
2446	else
2447	#endif
2448	#ifdef HAVE_RING2TOM
2449	/==================== ring-GB ==================================/
2450	if (strcmp(sys_cmd, "findZeroPoly")==0)
2451	{
2452	ring r = currRing;
2453	poly f = (poly) h->Data();
2454	res->rtyp=POLY_CMD;
2455	res->data=(poly) kFindZeroPoly(f, r, r);
2456	return(FALSE);
2457	}
2458	else
2459	#ifdef HAVE_VANIDEAL
2460	/==================== Creating zero polynomials =================/
2461	if (strcmp(sys_cmd, "createG0")==0)
2462	{
2463	/* long exp[50];
2464	int N = 0;
2465	while (h != NULL)
2466	{
2467	N += 1;
2468	exp[N] = (long) h->Data();
2469	// if (exp[i] % 2 != 0) exp[i] -= 1;
2470	h = h->next;
2471	}
2472	for (int k = 1; N + k <= currRing->N; k++) exp[k] = 0;
2473
2474	poly t_p;
2475	res->rtyp=POLY_CMD;
2476	res->data= (poly) kCreateZeroPoly(exp, -1, &t_p, currRing, currRing);
2477	return(FALSE); */
2478
2479	res->rtyp = IDEAL_CMD;
2480	res->data = (ideal) createG0();
2481	return(FALSE);
2482	}
2483	else
2484	#endif
2485	if (strcmp(sys_cmd, "redNF_ring")==0)
2486	{
2487	ring r = currRing;
2488	poly f = (poly) h->Data();
2489	h = h->next;
2490	ideal G = (ideal) h->Data();
2491	res->rtyp=POLY_CMD;
2492	res->data=(poly) ringRedNF(f, G, r);
2493	return(FALSE);
2494	}
2495	else
2496	#endif
2497	if (strcmp(sys_cmd, "minor")==0)
2498	{
2499	ring r = currRing;
2500	matrix a = (matrix) h->Data();
2501	h = h->next;
2502	int ar = (int)(long) h->Data();
2503	h = h->next;
2504	int which = (int)(long) h->Data();
2505	h = h->next;
2506	ideal R = NULL;
2507	if (h != NULL)
2508	{
2509	R = (ideal) h->Data();
2510	}
2511	res->data=(poly) idMinor(a, ar, (unsigned long) which, R);
2512	if (res->data == (poly) 1)
2513	{
2514	res->rtyp=INT_CMD;
2515	res->data = 0;
2516	}
2517	else
2518	{
2519	res->rtyp=POLY_CMD;
2520	}
2521	return(FALSE);
2522	}
2523	else
2524	#ifdef HAVE_F5
2525	/==================== F5 Implementation =================/
2526	if (strcmp(sys_cmd, "f5")==0)
2527	{
2528	if (h->Typ()!=IDEAL_CMD)
2529	{
2530	WerrorS("ideal expected");
2531	return TRUE;
2532	}
2533
2534	ring r = currRing;
2535	ideal G = (ideal) h->Data();
2536	res->rtyp=IDEAL_CMD;
2537	res->data=(ideal) F5main(G,r);
2538	return TRUE;
2539	}
2540	else
2541	#endif
2542	#ifdef HAVE_RINGS
2543	/==================== Testing groebner basis =================/
2544	if (strcmp(sys_cmd, "NF_ring")==0)
2545	{
2546	ring r = currRing;
2547	poly f = (poly) h->Data();
2548	h = h->next;
2549	ideal G = (ideal) h->Data();
2550	res->rtyp=POLY_CMD;
2551	res->data=(poly) ringNF(f, G, r);
2552	return(FALSE);
2553	}
2554	else
2555	if (strcmp(sys_cmd, "spoly")==0)
2556	{
2557	poly f = pCopy((poly) h->Data());
2558	h = h->next;
2559	poly g = pCopy((poly) h->Data());
2560
2561	res->rtyp=POLY_CMD;
2562	res->data=(poly) plain_spoly(f,g);
2563	return(FALSE);
2564	}
2565	else
2566	if (strcmp(sys_cmd, "testGB")==0)
2567	{
2568	ideal I = (ideal) h->Data();
2569	h = h->next;
2570	ideal GI = (ideal) h->Data();
2571	res->rtyp = INT_CMD;
2572	res->data = (void *) testGB(I, GI);
2573	return(FALSE);
2574	}
2575	else
2576	#endif
2577	#ifdef HAVE_PLURAL
2578	/==================== sca?AltVar ==================================/
2579	if ( (strcmp(sys_cmd, "AltVarStart") == 0) \|\| (strcmp(sys_cmd, "AltVarEnd") == 0) )
2580	{
2581	ring r = currRing;
2582
2583	if((h!=NULL) && (h->Typ()==RING_CMD)) r = (ring)h->Data(); else
2584	{
2585	WerrorS("`system(\"AltVarStart/End\"[,<ring>])` expected");
2586	return TRUE;
2587	}
2588
2589	res->rtyp=INT_CMD;
2590
2591	if (rIsSCA(r))
2592	{
2593	if(strcmp(sys_cmd, "AltVarStart") == 0)
2594	res->data = (void*)scaFirstAltVar(r);
2595	else
2596	res->data = (void*)scaLastAltVar(r);
2597	return FALSE;
2598	}
2599
2600	WerrorS("`system(\"AltVarStart/End\",<ring>) requires a SCA ring");
2601	return TRUE;
2602	}
2603	else
2604	#endif
2605	#ifdef HAVE_PLURAL
2606	#ifdef HAVE_RATGRING
2607	/==================== RatNF, noncomm rational coeffs =================/
2608	if (strcmp(sys_cmd, "intratNF") == 0)
2609	{
2610	poly p;
2611	poly *q;
2612	ideal I;
2613	int is, k, id;
2614	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2615	{
2616	p=(poly)h->CopyD();
2617	h=h->next;
2618	// Print("poly is done\n");
2619	}
2620	else return TRUE;
2621	if ((h!=NULL) && (h->Typ()==IDEAL_CMD))
2622	{
2623	I=(ideal)h->CopyD();
2624	q = I->m;
2625	h=h->next;
2626	// Print("ideal is done\n");
2627	}
2628	else return TRUE;
2629	if ((h!=NULL) && (h->Typ()==INT_CMD))
2630	{
2631	is=(int)((long)(h->Data()));
2632	// res->rtyp=INT_CMD;
2633	// Print("int is done\n");
2634	// res->rtyp=IDEAL_CMD;
2635	if (rIsPluralRing(currRing))
2636	{
2637	id = IDELEMS(I);
2638	int pl=(int)omAlloc0(IDELEMS(I)*sizeof(int));
2639	for(k=0; k < id; k++)
2640	{
2641	pl[k] = pLength(I->m[k]);
2642	}
2643	Print("starting redRat\n");
2644	//res->data = (char *)
2645	redRat(&p, q, pl, (int)IDELEMS(I),is,currRing);
2646	res->data=p;
2647	res->rtyp=POLY_CMD;
2648	// res->data = ncGCD(p,q,currRing);
2649	}
2650	else
2651	{
2652	res->rtyp=POLY_CMD;
2653	res->data=p;
2654	}
2655	}
2656	else return TRUE;
2657	return FALSE;
2658	}
2659	else
2660	/==================== RatNF, noncomm rational coeffs =================/
2661	if (strcmp(sys_cmd, "ratNF") == 0)
2662	{
2663	poly p,q;
2664	int is, htype;
2665	if ((h!=NULL) && ( (h->Typ()==POLY_CMD) \|\| (h->Typ()==VECTOR_CMD) ) )
2666	{
2667	p=(poly)h->CopyD();
2668	h=h->next;
2669	htype = h->Typ();
2670	}
2671	else return TRUE;
2672	if ((h!=NULL) && ( (h->Typ()==POLY_CMD) \|\| (h->Typ()==VECTOR_CMD) ) )
2673	{
2674	q=(poly)h->CopyD();
2675	h=h->next;
2676	}
2677	else return TRUE;
2678	if ((h!=NULL) && (h->Typ()==INT_CMD))
2679	{
2680	is=(int)((long)(h->Data()));
2681	res->rtyp=htype;
2682	// res->rtyp=IDEAL_CMD;
2683	if (rIsPluralRing(currRing))
2684	{
2685	res->data = nc_rat_ReduceSpolyNew(q,p,is, currRing);
2686	// res->data = ncGCD(p,q,currRing);
2687	}
2688	else res->data=p;
2689	}
2690	else return TRUE;
2691	return FALSE;
2692	}
2693	else
2694	/==================== RatSpoly, noncomm rational coeffs =================/
2695	if (strcmp(sys_cmd, "ratSpoly") == 0)
2696	{
2697	poly p,q;
2698	int is;
2699	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2700	{
2701	p=(poly)h->CopyD();
2702	h=h->next;
2703	}
2704	else return TRUE;
2705	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2706	{
2707	q=(poly)h->CopyD();
2708	h=h->next;
2709	}
2710	else return TRUE;
2711	if ((h!=NULL) && (h->Typ()==INT_CMD))
2712	{
2713	is=(int)((long)(h->Data()));
2714	res->rtyp=POLY_CMD;
2715	// res->rtyp=IDEAL_CMD;
2716	if (rIsPluralRing(currRing))
2717	{
2718	res->data = nc_rat_CreateSpoly(p,q,is,currRing);
2719	// res->data = ncGCD(p,q,currRing);
2720	}
2721	else res->data=p;
2722	}
2723	else return TRUE;
2724	return FALSE;
2725	}
2726	else
2727	#endif // HAVE_RATGRING
2728	/==================== Rat def =================/
2729	if (strcmp(sys_cmd, "ratVar") == 0)
2730	{
2731	int start,end;
2732	int is;
2733	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2734	{
2735	start=pIsPurePower((poly)h->Data());
2736	h=h->next;
2737	}
2738	else return TRUE;
2739	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2740	{
2741	end=pIsPurePower((poly)h->Data());
2742	h=h->next;
2743	}
2744	else return TRUE;
2745	currRing->real_var_start=start;
2746	currRing->real_var_end=end;
2747	return (start==0)\|\|(end==0)\|\|(start>end);
2748	}
2749	else
2750	/==================== shift-test for freeGB =================/
2751	#ifdef HAVE_SHIFTBBA
2752	if (strcmp(sys_cmd, "stest") == 0)
2753	{
2754	poly p;
2755	int sh,uptodeg, lVblock;
2756	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2757	{
2758	p=(poly)h->CopyD();
2759	h=h->next;
2760	}
2761	else return TRUE;
2762	if ((h!=NULL) && (h->Typ()==INT_CMD))
2763	{
2764	sh=(int)((long)(h->Data()));
2765	h=h->next;
2766	}
2767	else return TRUE;
2768
2769	if ((h!=NULL) && (h->Typ()==INT_CMD))
2770	{
2771	uptodeg=(int)((long)(h->Data()));
2772	h=h->next;
2773	}
2774	else return TRUE;
2775	if ((h!=NULL) && (h->Typ()==INT_CMD))
2776	{
2777	lVblock=(int)((long)(h->Data()));
2778	res->data = pLPshift(p,sh,uptodeg,lVblock);
2779	res->rtyp = POLY_CMD;
2780	}
2781	else return TRUE;
2782	return FALSE;
2783	}
2784	else
2785	#endif
2786	/==================== block-test for freeGB =================/
2787	#ifdef HAVE_SHIFTBBA
2788	if (strcmp(sys_cmd, "btest") == 0)
2789	{
2790	poly p;
2791	int lV;
2792	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2793	{
2794	p=(poly)h->CopyD();
2795	h=h->next;
2796	}
2797	else return TRUE;
2798	if ((h!=NULL) && (h->Typ()==INT_CMD))
2799	{
2800	lV=(int)((long)(h->Data()));
2801	res->rtyp = INT_CMD;
2802	res->data = (void*)pLastVblock(p, lV);
2803	}
2804	else return TRUE;
2805	return FALSE;
2806	}
2807	else
2808	/==================== shrink-test for freeGB =================/
2809	if (strcmp(sys_cmd, "shrinktest") == 0)
2810	{
2811	poly p;
2812	int lV;
2813	if ((h!=NULL) && (h->Typ()==POLY_CMD))
2814	{
2815	p=(poly)h->CopyD();
2816	h=h->next;
2817	}
2818	else return TRUE;
2819	if ((h!=NULL) && (h->Typ()==INT_CMD))
2820	{
2821	lV=(int)((long)(h->Data()));
2822	res->rtyp = POLY_CMD;
2823	// res->data = p_mShrink(p, lV, currRing);
2824	// kStrategy strat=new skStrategy;
2825	// strat->tailRing = currRing;
2826	res->data = p_Shrink(p, lV, currRing);
2827	}
2828	else return TRUE;
2829	return FALSE;
2830	}
2831	else
2832	#endif
2833	#endif
2834	/==================== t-rep-GB ==================================/
2835	if (strcmp(sys_cmd, "unifastmult")==0)
2836	{
2837	ring r = currRing;
2838	poly f = (poly)h->Data();
2839	h=h->next;
2840	poly g=(poly)h->Data();
2841	res->rtyp=POLY_CMD;
2842	res->data=unifastmult(f,g,currRing);
2843	return(FALSE);
2844	}
2845	else
2846	if (strcmp(sys_cmd, "multifastmult")==0)
2847	{
2848	ring r = currRing;
2849	poly f = (poly)h->Data();
2850	h=h->next;
2851	poly g=(poly)h->Data();
2852	res->rtyp=POLY_CMD;
2853	res->data=multifastmult(f,g,currRing);
2854	return(FALSE);
2855	}
2856	else
2857	if (strcmp(sys_cmd, "mults")==0)
2858	{
2859	res->rtyp=INT_CMD ;
2860	res->data=(void*)(long) Mults();
2861	return(FALSE);
2862	}
2863	else
2864	if (strcmp(sys_cmd, "fastpower")==0)
2865	{
2866	ring r = currRing;
2867	poly f = (poly)h->Data();
2868	h=h->next;
2869	int n=(int)((long)h->Data());
2870	res->rtyp=POLY_CMD ;
2871	res->data=(void*) pFastPower(f,n,r);
2872	return(FALSE);
2873	}
2874	else
2875	if (strcmp(sys_cmd, "normalpower")==0)
2876	{
2877	ring r = currRing;
2878	poly f = (poly)h->Data();
2879	h=h->next;
2880	int n=(int)((long)h->Data());
2881	res->rtyp=POLY_CMD ;
2882	res->data=(void*) pPower(pCopy(f),n);
2883	return(FALSE);
2884	}
2885	else
2886	if (strcmp(sys_cmd, "MCpower")==0)
2887	{
2888	ring r = currRing;
2889	poly f = (poly)h->Data();
2890	h=h->next;
2891	int n=(int)((long)h->Data());
2892	res->rtyp=POLY_CMD ;
2893	res->data=(void*) pFastPowerMC(f,n,r);
2894	return(FALSE);
2895	}
2896	else
2897	if (strcmp(sys_cmd, "bit_subst")==0)
2898	{
2899	ring r = currRing;
2900	poly outer = (poly)h->Data();
2901	h=h->next;
2902	poly inner=(poly)h->Data();
2903	res->rtyp=POLY_CMD ;
2904	res->data=(void*) uni_subst_bits(outer, inner,r);
2905	return(FALSE);
2906	}
2907	else
2908	/==================== bifac =================/
2909	#ifdef HAVE_BIFAC
2910	if (strcmp(sys_cmd, "bifac")==0)
2911	{
2912	if (h->Typ()!=POLY_CMD)
2913	{
2914	WerrorS("`system(\"bifac\",<poly>) expected");
2915	return TRUE;
2916	}
2917	if (!rField_is_Q())
2918	{
2919	WerrorS("coeff field must be Q");
2920	return TRUE;
2921	}
2922	BIFAC B;
2923	CFFList C;
2924	int sw_rat=isOn(SW_RATIONAL);
2925	On(SW_RATIONAL);
2926	CanonicalForm F( convSingPClapP((poly)(h->Data())));
2927	B.bifac(F, 1);
2928	CFFList L=B.getFactors();
2929	// construct the ring ==============================================
2930	int i;
2931	int lev=ExtensionLevel();
2932	char names=(char)omAlloc0(lev*sizeof(char_ptr));
2933	for(i=1;i<=lev; i++)
2934	{
2935	StringSetS("");
2936	names[i-1]=omStrDup(StringAppend("a(%d)",i));
2937	}
2938	ring alg_ring=rDefault(0,lev,names);
2939	ring new_ring=rCopy0(currRing); // all variable names, ordering etc.
2940	new_ring->P=lev;
2941	new_ring->parameter=names;
2942	new_ring->algring=alg_ring;
2943	new_ring->ch=1;
2944	rComplete(new_ring,TRUE);
2945	// set the mipo ===============================================
2946	ring save_currRing=currRing; idhdl save_currRingHdl=currRingHdl;
2947	rChangeCurrRing(alg_ring);
2948	ideal mipo_id=idInit(lev,1);
2949	for (i=lev; i>0;i--)
2950	{
2951	CanonicalForm Mipo=getMipo(Variable(-i),Variable(i));
2952	mipo_id->m[i-1]=convClapPSingP(Mipo);
2953	}
2954	idShow(mipo_id);
2955	alg_ring->qideal=mipo_id;
2956	rChangeCurrRing(new_ring);
2957	for (i=lev-1; i>=0;i--)
2958	{
2959	poly p=pOne();
2960	lnumber n=(lnumber)pGetCoeff(p);
2961	// no need to delete nac 1
2962	n->z=(napoly)mipo_id->m[i];
2963	mipo_id->m[i]=p;
2964	}
2965	new_ring->minideal=id_Copy(alg_ring->qideal,new_ring);
2966	// convert factors =============================================
2967	ideal fac_id=idInit(L.length(),1);
2968	CFFListIterator J=L;
2969	i=0;
2970	intvec *v = new intvec( L.length() );
2971	for ( ; J.hasItem(); J++,i++ )
2972	{
2973	fac_id->m[i]=convClapAPSingAP( J.getItem().factor() );
2974	(*v)[i]=J.getItem().exp();
2975	}
2976	idhdl hh=enterid("factors",0,LIST_CMD,&(currRing->idroot),FALSE);
2977	lists LL=(lists)omAllocBin( slists_bin);
2978	LL->Init(2);
2979	LL->m[0].rtyp=IDEAL_CMD;
2980	LL->m[0].data=(char *)fac_id;
2981	LL->m[1].rtyp=INTVEC_CMD;
2982	LL->m[1].data=(char *)v;
2983	IDDATA(hh)=(char *)LL;
2984
2985	rChangeCurrRing(save_currRing);
2986	currRingHdl=save_currRingHdl;
2987	if (!sw_rat) Off(SW_RATIONAL);
2988
2989	res->data=new_ring;
2990	res->rtyp=RING_CMD;
2991	return FALSE;
2992	}
2993	else
2994	#endif
2995	/==================== gcd-varianten =================/
2996	if (strcmp(sys_cmd, "gcd") == 0)
2997	{
2998	if (h==NULL)
2999	{
3000	Print("NTL_0:%d (use NTL for gcd of polynomials in char 0)\n",isOn(SW_USE_NTL_GCD_0));
3001	Print("NTL_p:%d (use NTL for gcd of polynomials in char p)\n",isOn(SW_USE_NTL_GCD_P));
3002	Print("EZGCD:%d (use EZGCD for gcd of polynomials in char 0)\n",isOn(SW_USE_EZGCD));
3003	Print("EZGCD_P:%d (use EZGCD_P for gcd of polynomials in char p)\n",isOn(SW_USE_EZGCD_P));
3004	Print("CRGCD:%d (use chinese Remainder for gcd of polynomials in char 0)\n",isOn(SW_USE_CHINREM_GCD));
3005	Print("SPARSEMOD:%d (use SPARSEMOD for gcd of polynomials in char 0)\n",isOn(SW_USE_SPARSEMOD));
3006	Print("QGCD:%d (use QGCD for gcd of polynomials in alg. ext.)\n",isOn(SW_USE_QGCD));
3007	Print("FGCD:%d (use fieldGCD for gcd of polynomials in Z/p)\n",isOn(SW_USE_fieldGCD));
3008	Print("homog:%d (use homog. test for factorization of polynomials)\n",singular_homog_flag);
3009	return FALSE;
3010	}
3011	else
3012	if ((h!=NULL) && (h->Typ()==STRING_CMD)
3013	&& (h->next!=NULL) && (h->next->Typ()==INT_CMD))
3014	{
3015	int d=(int)(long)h->next->Data();
3016	char s=(char )h->Data();
3017	if (strcmp(s,"NTL_0")==0) { if (d) On(SW_USE_NTL_GCD_0); else Off(SW_USE_NTL_GCD_0); } else
3018	if (strcmp(s,"NTL_p")==0) { if (d) On(SW_USE_NTL_GCD_P); else Off(SW_USE_NTL_GCD_P); } else
3019	if (strcmp(s,"EZGCD")==0) { if (d) On(SW_USE_EZGCD); else Off(SW_USE_EZGCD); } else
3020	if (strcmp(s,"EZGCD_P")==0) { if (d) On(SW_USE_EZGCD_P); else Off(SW_USE_EZGCD_P); } else
3021	if (strcmp(s,"CRGCD")==0) { if (d) On(SW_USE_CHINREM_GCD); else Off(SW_USE_CHINREM_GCD); } else
3022	if (strcmp(s,"SPARSEMOD")==0) { if (d) On(SW_USE_SPARSEMOD); else Off(SW_USE_SPARSEMOD); } else
3023	if (strcmp(s,"QGCD")==0) { if (d) On(SW_USE_QGCD); else Off(SW_USE_QGCD); } else
3024	if (strcmp(s,"FGCD")==0) { if (d) On(SW_USE_fieldGCD); else Off(SW_USE_fieldGCD); } else
3025	if (strcmp(s,"homog")==0) { if (d) singular_homog_flag=1; else singular_homog_flag=0; } else
3026	return TRUE;
3027	return FALSE;
3028	}
3029	else return TRUE;
3030	}
3031	else
3032	#if 0
3033	/==================== gcd-test =================/
3034	if (strcmp(sys_cmd, "GCD") == 0)
3035	{
3036	if ((h!=NULL) && (h->Typ()==POLY_CMD)
3037	&& (h->next!=NULL) && (h->next->Typ()==POLY_CMD))
3038	{
3039	poly f=(poly)h->Data();
3040	poly g=(poly)h->next->Data();
3041	res->rtyp=POLY_CMD;
3042	res->data=(char*)id_GCD(f,g,currRing);
3043	return FALSE;
3044	}
3045	else return TRUE;
3046	}
3047	else
3048	#endif
3049	/==================== subring =================/
3050	if (strcmp(sys_cmd, "subring") == 0)
3051	{
3052	if (h!=NULL)
3053	{
3054	extern ring rSubring(ring r,leftv v); /* ipshell.cc*/
3055	res->data=(char *)rSubring(currRing,h);
3056	res->rtyp=RING_CMD;
3057	return res->data==NULL;
3058	}
3059	else return TRUE;
3060	}
3061	else
3062	#ifdef ix86_Win
3063	/==================== Python Singular =================/
3064	if (strcmp(sys_cmd, "python") == 0)
3065	{
3066	const char* c;
3067	if ((h!=NULL) && (h->Typ()==STRING_CMD))
3068	{
3069	c=(const char*)h->Data();
3070	if (!PyInitialized) {
3071	PyInitialized = 1;
3072	// Py_Initialize();
3073	// initPySingular();
3074	}
3075	// PyRun_SimpleString(c);
3076	return FALSE;
3077	}
3078	else return TRUE;
3079	}
3080	else
3081	/*==================== Python Singular =================
3082	if (strcmp(sys_cmd, "ipython") == 0)
3083	{
3084	const char* c;
3085	{
3086	if (!PyInitialized) {
3087	PyInitialized = 1;
3088	Py_Initialize();
3089	initPySingular();
3090	}
3091	PyRun_SimpleString(
3092	"try: \n\
3093	__IPYTHON__ \n\
3094	except NameError: \n\
3095	argv = [''] \n\
3096	banner = exit_msg = '' \n\
3097	else: \n\
3098	# Command-line options for IPython (a list like sys.argv) \n\
3099	argv = ['-pi1','In <\\#>:','-pi2',' .\\D.:','-po','Out<\\#>:'] \n\
3100	banner = '* Nested interpreter *' \n\
3101	exit_msg = '* Back in main IPython *' \n\
3102	\n\
3103	# First import the embeddable shell class \n\
3104	from IPython.Shell import IPShellEmbed \n\
3105	# Now create the IPython shell instance. Put ipshell() anywhere in your code \n\
3106	# where you want it to open. \n\
3107	ipshell = IPShellEmbed(argv,banner=banner,exit_msg=exit_msg) \n\
3108	ipshell()");
3109	return FALSE;
3110	}
3111	}
3112	else
3113	*/
3114
3115	#endif
3116
3117	// TODO: What about a dynamic module instead? Only Linux?
3118	#ifdef HAVE_SINGULAR_PLUS_PLUS
3119	if (strcmp(sys_cmd,"Singular++")==0)
3120	{
3121	// using namespace SINGULAR_NS;
3122	extern BOOLEAN Main(leftv res, leftv h); // FALSE = Ok, TRUE = Error!
3123	return Main(res, h);
3124	};
3125	#endif // HAVE_SINGULAR_PLUS_PLUS
3126
3127
3128	#ifdef HAVE_GFAN
3129	/======== GFAN ==============/
3130	/*
3131	WILL HAVE TO CHANGE RETURN TYPE TO LIST_CMD
3132	*/
3133	if (strcmp(sys_cmd,"gfan")==0)
3134	{
3135	if ((h==NULL) \|\| (h!=NULL && h->Typ()!=IDEAL_CMD))
3136	{
3137	Werror("system(\"gfan\"...) Ideal expected");
3138	return TRUE; //Ooooops
3139	}
3140	ideal I=((ideal)h->Data());
3141	res->rtyp=IDEAL_CMD;
3142	res->data=(ideal) gfan(I);
3143	//res->rtyp=LIST_CMD;
3144	//res->data= ???
3145
3146	return FALSE; //Everything went fine
3147	}
3148	else
3149	#endif
3150
3151	/==================== Error =================/
3152	Werror( "system(\"%s\",...) %s", sys_cmd, feNotImplemented );
3153	}
3154	return TRUE;
3155	}
3156
3157	#endif // HAVE_EXTENDED_SYSTEM
3158
3159

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